The mandolin was manufactured in the United States and has a model number of 756.
1930s BLACK DIAMOND STRINGS Vintage BOX of 8 Single Electric Guitar E 6th No 937
2 Vintage 1930s Black Diamond Strings for Violin A and G Strings (#6) PB2
Vintage Bell Brand Mandolin A or 2nd No. 051 Steel National Musical String D or
Black Diamond Strings, Vintage Case & Boxes for Display
Vintage Banjo Strings in Box Black Diamond Strings Advertising
GRETSCH Violin A Or 2nd Strings, Silvered Steel W/Bridge Protection No. 202 NOS
