Posted By:
BenHere's a nice writeup and checklist by Chris Stufflestreet, a good guy who posts here once in a blue moon:
http://www.geocities.com/chrisstufflestreet/t206.html
And here's Lipset's encyclopedia, which is essential for any prewar collector, a good t206 section too:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=31719&item=5182153835&rd=1&ssPageName=WDVW
And the search function on this forum will give you loads and loads of other info. Good Luck.