I've been told a story about an old woman that went to the police with an m1919 that she found at her home ( she was from a village in the north of luxembourg where a lot of fighting was going on during botb)
The police chap knew what it was and offert her 50€ for the browning. She took the money and surprsingly came back a day later telling the policeman that she found another gun at her attic. It was an MP44. The policeman gave her again 50€ and everybody was happy.
There are some people who are veeeeeeery lucky.