Glen,
A lot of factors come into play with these old A-2 jackets. Can you post pics of it?
Depending on the condition of the jacket it could fetch a few hundred all the way up to $1,500 or more. Things that add value are the provenance (history to a pilot), any original unit patches still attached, and especially any custom artwork. There are a lot of high-end collectors out there that are willing to spend some serious $$$'s on flight jackets if there is a history behind them and can be I.D.'d.
Here's one that was just listed on ebay which is currently over $1,000. It's from a P-47 pilot with the 9th AAF and has everything going for it.
http://cgi.ebay.com/Orig-WWII-A-2-A2-Fl ... dZViewItem
I wouldn't be surprised to see this top over $2,000!
John