Probably too old for Sams (which started in 1946). The 2206 (1938) is online at Nostalgia Air -
http://www.nostalgiaair.org/PagesByM...4/M0000304.pdf
You can get an idea of the age from the tubes used - there's a list on my web site under "Tube Data Online" ...
http://www.audiophool.cjb.net/Techno.html