I’ve encountered the term “Merry Widows” as an old-fashioned slang term for condoms, but I never realized it was an actual brand name:

merry-widows-condom-tin

There’s a vast collection of vintage condom tins at Cardhouse.com, and about this one they write:

The term “merry widow” apparently originates from a 1907 ballet first performed in London. Then at some point condoms were called merry widows, possibly because of a 1920s play of the same name which was apparently chock full of double entendres.

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