Most likely a small semi-automatic pistol
No published sn data that I am aware of.
35-100 USD
100-250 or so
ca 5000
$250 - $300.00 US dollars depending on the condition.
Yes. Check gun shops, gun shows, auctions
A few hundred to a thousand or so.
Does it look like this http://en.wikipedia.org/wiki/Sauer_38H? Without more info the best guess on value would be 100-500.
Yes, in Suhl.
100-350 USD
JP Sauer made some very fine guns, and it would be impossible to accurate evaluate without seeing it. Could be into the thousands.
10-100 USD or so