UNITED STATES GLASS CO. No. 15121 MAYFLOWER/DUQUESNE (OMN) by United States Glass Company/Pittsburgh-PA (Company Operated: 1891-1962) , 1910 Introduced

• AKA: Portland
NOTE: Sid Lethbridge: We have two US Glass Co. catalogs of No. 15121 - each with a different name for the line. One provided by Paul Kirk with the Duquesne name and one provided by Tom Bredehoft with the Mayflower name. Until such time as this puzzle gets sorted out, both names are appropriate for our files.
NOTE: There are three or four similar patterns that cause a lot of confusion - US Glass No. 15121 Mayflower/Duquesne aka Portland; Fostoria No, 1299 aka Long Buttress; and New Martinsville No. 712 aka Placid.
NOTE: This pattern was later reworked to become UNITED STATES GLASS CO. No. 15311 DUNMOYLE (OMN)

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Glass Display
Shape: Bowls & Berry Sets
Contributor: May Ridolphi Eason
Glass Display View
Shape: Comport/Compotes
Contributor: Terri Frauzel, George Miller
Glass Display View
Shape: Comport/Compotes
Contributor: Mary Lena, Helena VonDrakenstein, 7/31/2026
Glass Display View
Shape: Stemware
Contributor: David Lowe 2026 part of the Goblet Pairs series
Glass Display View
Shape: Sugars
Contributor: George Miller
Glass Display View
Shape: Sugars
Contributor: Suzanne Danen gold wash decoration Sugar: 5” wide by 6” tall. Creamer: 5” wide (including handle) by 4” tall
Glass Display View
Shape: Sugars
Contributor: Suzanne Danen gold wash decoration Sugar: 5” wide by 6” tall. Creamer: 5” wide (including handle) by 4” tall
Glass Display View
Shape: Pattern Detail
Contributor: Suzanne Danen sugar base detail
Glass Display View
Shape: Catalogue/Ads
Contributor: Tom Bredehoft - MAGWV
Glass Display View
Shape: Catalogue/Ads
Contributor: Sid Lethbridge
Glass Display View
Shape: Catalogue/Ads
Contributor: Paul Kirk Jr., The Glass Paper Fanatics (TGPF)
Glass Display View
Shape: Candlesticks
Contributor: George Miller
Glass Display View
Shape: Vases, Rose Bowls, Ferners
Contributor: Rosie A. Bixenman
Glass Display View
Shape: Candlesticks
Contributor: LS Kutzen 7H
Glass Display View
Shape: Candlesticks
Contributor: Carleen Smith Newlands
Glass Display View
Shape: Vases, Rose Bowls, Ferners
Contributor: Winfred Huff, Sharon Swinnerton, George Miller
Glass Display View
Shape: Dresser Sets/Pieces
Contributor: Roger Haworth, Wendy Barrett-Stuart
Glass Display View
Shape: Stemware
Contributor: Beth Moorhead 6H water goblet
Glass Display View
Shape: Celery Vases
Contributor: Nancy Tibbets Smith, Cindy Gilliam
Glass Display View
Shape: Creamers
Contributor: Kathy Conn Turner, Lynnette Theiss, Jessica L. Degarmo, Steve Ellwein, Jessica Blair, George Miller
Glass Display View
Shape: Spooners/Spills
Contributor: Jessica Blair (1,2), David Zeidler (3,4)
Glass Display View
Shape: Syrups/Molasses Cans
Contributor: Patty Kahn, Carol Mercurio Wiliams
Glass Display View
Shape: Individual/Berry Cream & Sugar
Contributor: Carol Mercurio Williams
Glass Display View
Shape: Bowls & Berry Sets
Contributor: Carol Jenkins flared nappy 9D
Glass Display View
Shape: Pickle/olive/relish dish/trays
Contributor: Kimberly Ann
Glass Display View
Shape: Pattern Comparison
Contributor: Sid Lethbridge
Glass Display View
Shape: Pattern Detail
Contributor: Carol Mercurio Williams - Example of pattern on the bottom
Glass Display View
Shape: Shakers (salt, pepper, sugar)
Contributor: LS Kutzen, Carol Mercurio Williams
Glass Display View
Shape: Butter, Cheese, & Honey Dishes
Contributor: George Miller, Candace R Shupack McMullen
Glass Display View
Shape: Cruets/Catsups
Contributor: Pam Gendron OS
Glass Display View
Shape: Catalogue/Ads
Contributor: Sid Lethbridge
Glass Display View
Shape: Pitcher
Contributor: Carol Mercurio Williams - water jug 7.5H, 4D base, 1 1/2 qts
Glass Display View
Shape: Pitcher
Contributor: Carol Mercurio Williams - tankard 10.5H, 4.5D base, 1.5 qts
Glass Display View
Shape: Celery Trays
Contributor: Matt Walt
Glass Display View
Shape: Finials
Contributor: Matthew Cox - 6.5D
Glass Display View
Shape: Toothpick/Match Holders
Contributor: Richard Ryan
Glass Display View
Shape: Toothpick/Match Holders
Contributor: Richard Ryan, Connie Y Thompson East
Glass Display View
Shape: Cups & Mugs
Contributor: Gay Bauwens
Glass Display View
Shape: Cruets/Catsups
Contributor: Pam Arndt - NOS
Glass Display View
Shape: Baskets
Contributor: Carol Mercurio Williams
Glass Display View
Shape: Cruets/Catsups
Contributor: Carol Mercurio Williams - NOS
Glass Display View
Shape: Water Bottles
Contributor: John Pfaff 8.5T
Glass Display View
Shape: Stemware
Contributor: May Ridolphi Eason
Glass Display View
Shape: Stemware
Contributor: May Ridolphi Eason
Glass Display View
Shape: Catalogue/Ads
Contributor: Sid Lethbridge
Glass Display View
Shape: Catalogue/Ads
Contributor: Sid Lethbridge
Glass Display View
Shape: Sugars
Contributor: Carol Mercurio Williams--breakfast sugar
Glass Display View
Shape: Cups & Mugs
Contributor: Carol Mercurio Williams
Glass Display View
Shape: Tumblers
Contributor: David Zeidler
Glass Display View
Shape: Comport/Compotes
Contributor: George Miller
Glass Display View
Shape: Punch Bowls/Bases
Contributor: Margaret Malloy
Glass Display View
Shape: Cake Stands/Plates
Contributor: Phyllis Haase Messerla
Glass Display View
Shape: Cake Stands/Plates
Contributor: Phyllis Haase Messerla
Glass Display View
Shape: Bowls & Berry Sets
Contributor: George Miller
Glass Display View
Shape: Table Sets
Contributor: George Miller