Sometimes a little research solves many issues
http://cgi.ebay.com/FP-1964-PHANTOM-...item53dde35d5b
I did a quick search on (1964, 64) Phillies ticket* and did see a lot similar to yours sell at this price recently.
As stated; these are pretty common within the hobby but, based on this sale, you could certainly put a $50 SRP on your item and be willing to take offers. And that's not a bad price to accept to sell.
This board is wonderful with getting help when needed! But remember this part *IS* primarily a pre-World War 2 card board. Other aspects of Net 54 Baseball can help you with this item; such as the Memorabilia forum
Regards
Rich