Offered here is perhaps the most reasonably priced Cameron Circle T putter ever, the C-5 Xperimental prototype, which would later be named the Detour. Circle T on the rear weight.
From Vog: While these typically have not been that popular, what they are is a fantastic training aid. Designed to promote a putting path that has a little arc, I have one myself and will pull it out when my stroke gets wonky.
Includes a Circle T Futura HC, 8.5/10