UNITED STATES GLASS CO. No. .3845 1/2 (OMN) toy mug by United States Glass Company (Pittsburgh-PA, Company Operated: 1891-1962) , Unknown Date of Introduction
US Glass export catalog - Not the same as 3845 which was AJ Beatty 100
image 1 of 2

Shape: Catalogue/Ads
Contributor: Karen Welch -Export ctalog - hobs go clear to the top. It is tiny, holding only .75oz

Shape: Pattern Comparison
Contributor: Sid Lethbridge

Shape: Cups & Mugs
Contributor: Nancy Dawson - 1.5H, 1.5D - same number of rows as catalog image.