25-250 usd
value depends on overall condition. check at: WALTHERSFORUM.COM
Impossible to answer without more information.
50-500 usd
Impossible to value with any accuracy with only the serial number. Could be 50-5000 USD depending on specifics.
61-85, 100-1000 depending on specifics
If this is a .38 cal (check the markings on the frame and barrell) it is chambered for .38 caliber. If it is a Police Positive ammunition would be the .38 PP If it is a Police Positive Special you could use .38 PPS Check with any reputable gun shop/dealer or range and they'll give you the information you need.
Impossible to answer without the serial number.
A few hundred to multiple thousands of USD depending on condition and who did the engraving.
Are you sure it's nickel and not chrome?
Post on the P38forum.com
@1944
70-85