My best would have to be my named German M35 and Japanese Type 90 helmets. Both came into the recycling facility that my family owns. If I had not asked for them, the M35 would have either been thrown out or been painted over and used as a motorcycle helmet. The Type 90 would have either sat in a scorching-hot attic forever but more than likely would have been thrown out.
The M35 is named to "Kittel", while the Type 90 is named to "NAKAJIMA Kazu". The Type 90 was picked up on Iwo Jima(!) by George J. Ritz, a sailor on LSM 264.