Could we add the mint: S. H. Quint & Sons. (1849–1971)
(Also referred to as ‘The Quint Mint’, or ‘The Quint Company’)
Founded in 1849 by Silas H. Quint (1821–1897)
Still ‘technically’ exists but no longer makes numismatic products.
https://quintco.com/highest-quality-flexographic-photopolymer-printing-plates/
Address was at: 15 South 4th Street, Philadelphia, Pennsylvania, USA.
(Also listed as: 4th & Chestnut Street, Philadelphia, Pennsylvania, USA.)
(And listed as: 24 South 4th Street, Philadelphia, Pennsylvania, USA.)
Pictured here in 1922: https://libwww.freelibrary.org/digital/item/5745
For items such as:
Thanks.

