Old case for mandolin strings with 9 strings around 1930s

• The manufacturer of the case is unknown
• Classification of the case into D strings / A strings / B strings / G strings and H strings
• Dimensions of the case approx. 14 x 11 cm
• Silversteel strings - mandolin strings - old strings

In good used condition, worn and slightly stained, no wonder at 90 years, please note the pictures.