You've found the illustrations I have posted in another topic in here, and thus have the answer already:
The propeller is from a Kriegsmarine G7a(TI). Mid-war production in brass, replacing the pre-war 4-blade propeller. At the end of the war, brass were replaced by steel.
The propellers (older 4-blade or 6-blade brass/steel) were not altered for torpedoes in post-war service with Spain, West-Germany, Denmark and Norway. "T1 mod 1" is the designation given to ex-Kriegsmarine G7a(TI) modified with wire-guidance by the norwegian navy from 1970 (in use to 2000). Most parts like this orignates from Norway, due to the longtime-service of the torpedo.
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