5000$
100-1000 USD or so
You will need to contact Walther to find out.
Yes.
1961
Dieter Marschall's book on Walther has sn data in it.
Try posting at p38forum.com
http://www.p38forum.com/
Try asking on the p38forum.com
250 or so
Try the P38forum
about as much as your mother is to me!
Military P38s are dated from a 3 letter code, and not a serial number.