L in cursive script mark: Libbey Glass Company

            Capital L (in cursive script) mark:   

   Libbey Glass, Inc., Toledo, Ohio  (1888-to date)

The “cursive L” trademark is frequently seen embossed on the bases of various tableware items, especially tumblers and other drinking glasses,  barware, wine glasses and stemware for home use as well as commercial and institutional use.

Julian Toulouse, in Bottle Makers and their Marks (1971), page 327, illustrates the cursive L inside a “double circle” or “double-ring” as introduced circa 1924.     A cursive capital L inside a three-segmented circle (i.e. a broken circle, or circle with 3 gaps)  is shown with a 1937 introductory date; that same mark is also mentioned on page 49 of 400 Trademarks on Glass (Arthur G. Peterson, 1968) as introduced in 1937 but discontinued sometime previous to publication of his book.   This 1937 date is presumably based on a check into the U.S. Patent and Trademark Office records.

L inside a circle

L inside a circle- introduced 1955

The “cursive L” within an ordinary circle or ring is shown as being introduced in 1955 by both Toulouse and Peterson.     In actual practice, this mark often appears backwards if viewed from outside the glass, looking at the base, which means of course it appears correctly when looking down through the inside.

In more recent years the cursive L is typically plain, not inside a circle. This mark is often very faint, sometimes completely invisible or “smeared”, and can sometimes be likened to the appearance of a short curly hair embedded on the surface of the glass In a few cases it might have an appearance vaguely resembling  the cursive letter “Q”, or perhaps a gracefully designed looped numeral “2”.   This “cursive L” mark is currently still in use (as of 2016).

(If anyone has information pinpointing the exact date when the circle was removed from the mark (or if items are still being made with the circle) please contact me through the “email” button at the bottom of any page on this site).

Libbey mark - cursive capital letter "L"

Libbey Mark – Cursive “L” seen on the base of glassware

Libbey has made many millions (or more likely, billions) of glass tumblers, water glasses, tea glasses, goblets and other drinkware over many years, and it is likely that the majority of households in the USA have at least one Libbey-made glass in their kitchen cupboard!   All Libbey glassware is not marked, although much of it is.



Libbey has recently purchased Crisa (2006) and much of that glassware is sold under the “Crisa” brand name.

Libbey used several other trademarks in their early years of glass production which are not commonly seen, such as on cut glass tableware items.   Check this site for an article on Libbey with more information on their early marks timeline:

http://www.Cutglass.org/articles/art26libbey.htm .

For a brief summary of their corporate history, check out Libbey’s history webpage here:


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25 Responses to L in cursive script mark: Libbey Glass Company

  1. Tony Rossi says:

    Hi I have a set of 12 paneled libby beer mugs. All of them hav the cursive L but below the L there are numbers some are 22 and 30 what does that mean? Thank you

  2. Kelly Green says:

    Thank you so much for your time and explanation. I’ve just become aware that drinking glassware even had marks on the bottom when I noticed that there was a script L on the bottom of a few of my glasses! My mystery is now solved!

  3. Bj burke says:

    I have a set of Libbey glasses. It has the L but it also has a star with ht inside it, and a 3 on each side of the star. What does that mean?

  4. renee says:

    i have an antique french art deco perfume rectangular bottle hand numbered 877 on the bottom on the bottle and cut ground glass stopper it also has the initial {handsigned} L or V can you tell me what company or who the maker of this bottle is?

    • David says:

      I’m not familiar with the mark you describe. If it is a French perfume bottle, it may be somewhat “out of my league”, as I don’t have a lot of knowledge or info on French glass companies. I sent you an email directly, asking for a photo of the bottle, but the email was returned via a “Mailer Daemon” as undeliverable. I think you may have typed in your email address incorrectly.

  5. David Lorichon says:

    I have a clear glass bottle that’s very small. It has a cursive L and above it the # 497. What does
    the 497 stand for?

  6. Kellie Kennedy says:

    Comment about the circle 1955 doesn’t seem correct. I have Carnival pattern 1946. Libbey has no catalog from this time per their historical website. I have June 1946 life magazine advertising this collection. I have full collection as well as caddy. I have images of set, the cursive l with circle and the magazine ad.

    • David says:

      Hi Kellie,
      From information published by Julian Toulouse (Bottle Makers and their Marks, 1971) and Arthur G. Peterson (400 Trademarks on Glass, 1968), the circled cursive L trademark was introduced in 1955 on drinking glasses.
      Looking at this webpage that provides links to several Libbey catalogs, I viewed several of the catalogs and found the first one that shows the circled L trademark (on nearly every page) is their FALL-WINTER 1955 catalog.

      Are you telling me that your CARNIVAL pattern glasses actually have the circled L on the bottom of the glasses? If so, I am wondering if this is an instance of the glasses being later production – perhaps made several years after 1946. I know that some glassware pattern lines (from various glass firms) were issued and re-issued years and years after their introduction. I don’t know if this is the case with the pattern named “CARNIVAL” which shows colorful circus-related scenes. But I think that is a possibility. If any readers have better information on this, please post your thoughts.
      Thank you,

      • Kellie says:

        Yes circle L in cursive is on bottom. I have looked at many of the catalogs no luck finding any produced in them. When I purchased them they came with the Life magazine add June 10, 1946 addition.
        I have contacted Libbey historical via email in hopes to find out more information. Thank you for your input.

  7. chris says:

    have a wine glass with a frosted capital ‘S’ on the base. Any ideas about this mark?

  8. Rachel says:

    Thanks so much for publishing the hallmarks & history of Libbey glass!! Finally my mystery on of few items are no more! 🙂

  9. Mark Watts says:

    David, I have a set of juice size tumblers that came from a restaurant that originated in 1910. I t had many owners through the years with my husband and I being the last owners before the building was sold.After reading on your site I was able to identify these as Libby glassware. There is an “L” in the center with almost like hairlike projections coming away from the L. There is also an additional faint Cursive L on the bottom. They all have the extra L. Do you have any idea how old these may be? Thank you in advance for your help!

    • David says:

      Mark, the “L in cursive” mark has been used for many years (and probably marked on billions of glasses), sorry I cannot give you a definite age range other than what I have already written in this article.

  10. joseph says:

    How to remove water stains from the water goblet

    • David says:

      Hi Joseph, A dull haze on glassware can be caused by more than one process. Any glassware stored for very long periods of time in a high-humidity environment, such as a damp basement, can develop a dull whitish stain (“Sick glass”) which is permanent. That is actually caused by the deterioration of a very, very thin layer of the surface of the glass. The only way to remove that type of haze is by professional “tumbling” which is sometimes done for higher-value glass objects such as antique bottles and collectible electrical insulators.

      In your case, the deposit could be just a calcium film from hard water, OR it could be from heavy repeated washing in an automatic dishwasher. If a good cleaning/soaking with a vinegar solution or “lime-away” product is ineffective, the film is more or less permanent.
      High quality glassware such as “lead crystal” goblets and similar tableware should not be washed in a dishwasher because of the harsh alkali detergents which can gradually etch the surface of the glass. They should be hand-washed only, with mild dish soap and rinsed with clear water and dried with a soft cloth, but not with harsh abrasive cleaning pads.
      There are many webpages online that delve into these subjects with more detail. You might try searching google with terms such as “sick glass” “leaching”, “cleaning crystal glassware”, “haze on glass”, “hand-washing crystal” and others. Here is a page with some basic information:
      I hope this will be of help.

  11. Cheryl says:

    Hi. I have a mini bud vase. I know they sell these new on Amazon, but this has a script L with a tiny number 8 on the left side. Is this older? Thanks for your info.

  12. What would the value of a tumbler 8 oz size with a silver ring around rim.? There is a cursive L on the bottom of each tumbler

    • David says:

      Hi Terry,
      Libbey has made hundreds (if not thousands) of different patterns and styles of tumblers over the years and I do not have information on current values.
      Best regards,

  13. Don says:

    I have a coke bottle pat D-105529 6 oz with ” 15L46 ” on the side and the city ANNISTON ALA on the bottom. What I am trying to get info about this bottle is that in the words MIN and CONTENTS the letter ( N ) is reversed. This bottle look Iike it was filled only once. I would appreciate any help/info on this bottle.

    • David says:

      Hi Don, Alot of older bottles are found with backward letters or numbers (appearing that way simply because the mold engraver accidentally engraved the lettering “correctly” on the mold —the lettering has to be backward on the mold to appear correctly on the bottle). However, not being a specialist in Coke bottles, I don’t know how commonly this is seen on Cokes. Also, I’m not sure about the maker on your bottle but I think it might have been manufactured by Laurens Glass Works, Laurens, South Carolina. On many of their bottles, the Laurens initials (LGW) are placed in between two groups of numbers, with the date code usually on the right. (I am assuming your bottle was made in 1946). Because the bottle was made for a city in Alabama, this would point to a glassmaker in the southeast as a more likely candidate for the glass manufacturer. (Also, another possibility might be Liberty Glass Co. of Sapulpa, Oklahoma, but I think less likely). Perhaps a Coke bottle specialist can chime in with more info on the backward numbers on your bottle. Best regards, David

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