Federal Glass Mini Beer Mug Shot Glasses

Vintage Collectible Federal Glass Mini Beer Mug Shot Glasses, The pink one is extra nice and pops up bright pink under 365 UV blacklight from selenium in the glass. The “F inside a shield” logo was first used by Federal Glass Company in 1932, according to the U.S. Patent & Trademark Office records, but as researcher/ author Marg Iwen reported in her article on Federal, the mark is shown in catalogs as early as 1927. How late this mark was used seems open to question, as some research sources seem to imply the mark was phased out around 1958