Unusual items that originated from a German soldier: a grouping comprising of 3 Russian (and/or pre-WWII-period ie. '1938'-dated) currency-bills

This is an unusual grouping that originated from a German soldier: a grouping comprising of 3 Russian (and/or pre-WWII-period ie. '1938'-dated) currency-bills (of the nomination of respectively '1', '3'- and/or '5' 'Ruble') showing all three a detailed illustration of a communist-soldier and that come all three in an overall nice- (and I deem clearly used- but nevertheless still nicely preserved-), condition. The bills were used and do all three show some minimal aging (they are, however, void of any damage as can be seen on the pictures). Simply a neat - and unusual! - 'German'-acquired 'war-souvenir'-grouping that most certainly originated from the Russian-campaign!