[Luke]

Bob,

Welcome to the Luger Forum. As Reggie (waltherguy) above comments, those guns captured by the Russians often had a crude "X" drawn through the serial number on the side of the receiver. I have a 1937 like that.

Assuming the serial number on the barrel is different, this gun probably had a replacement barrel added at some point.

Without further information it would appear this is probably a mismatched "shooter" Luger having little collector value. The probability of ownership by Dr. Josef Mangele is highly remote. Many such fanciful stories, almost all fiction, have been connected with different German pistols, mostly Lugers, from time to time.

If you can post pictures of the gun the experts here could probably give you a little more information on its likely history.

Good luck.
Luke