WW2 German Kriegsmarine Tropical Blouse.
This example is in very good condition, as seen from the pics its been altered by shortening and having the wais elasticated. Jacket has no buttons, being a tropical version jacket would have removable buttons to be taken off for washing. Only markings i can see is a late war RF Nr stamped to the inside. Jacket also has a number of wartime blue paper/card made buttons .Why was this jacket altered, well it could have been for warservice, subs etc or perhaps a postwar alteration, i'll leave that up to the purchaser.