No.
Not much info out there on Kessler Arms Corp. What is known is that these guns were made from 1951 - 1953.
Spesco Corp in ATL
No. Firearms International Corp was primarily an importer of European made civilian hunting arms.
In good shape the most is $120.
$250
The Beretta Firearms Corp. manufactures out of Italy.
No.
10-80 USD or so
100-300 USD
It was a corporation, so it was owned by the stockholders, and manufactured guns in Silver Creek, New York.
The Spiegel 31c was made from1955-1961 by the Kessler Firearms Company