that is called trench art . it is very collectable!! these pieces were made by service men while enlisted and usually made as something to pass time between fighting in ww2. very nice!!
i collect gun and shell. diggerjeff is rigt its valuable . they did this even back during the cilvil war also. they used what they had to carve things .bayonets knives just what they had . i would hang on to it every pice is unique.