They show up on eBay all the time http://cgi.ebay.com/Tama-vintage-80...aultDomain_0&hash=item4cf921e837#ht_500wt_933
I have one that was once part of a double. It is the two beater right pedal.
Let me know if you are interested.
I still use the single (Left Pedal) on my practice kit. (pictured)