Posted By:
Sean BHAm I on crazy pills or did T3's come in standard size?
This guy is auctioning off 7 of these and they measure 2.5" x 3.5" but he is sure they are from the 1909-1911 era.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280105996844&sspagename=ADME:L:RTQ:US:1
Thanks,
Sean BH