???? Era: c. 1920s–1940s (estimate).
Vintage Black Diamond Banjo/guitar Strings various sizes Loop End Steel
Vintage Black Diamond Banjo Strings 13 are in sealed Packs
Vintage BLACK DIAMOND 723 Banjo Strings G or 5th (Ball End) Steel 12-pack NOS
Vintage BLACK DIAMOND No. 790 1/2 - Tenor Banjo String A or 1st (Loop End) Steel
Lot Of 3 Vintage Black Diamond Violin Strings National Music Co. Advertising
