I gotta say that the possibility of Jon selling the Cat Helmet is somewhat disturbing. That treasure would be the centerpiece, the load-bearing wall if you will, of the future RFN Hall of Fame. It'd be like the Baseball Hall of Fame without Shoeless Joe Jackson's shoelaces. An important piece of history would be missing.
Plus, think of the tax advantages! Jon could lease the Cat Helmet to the RFN Hall of Fame for a lucrative yearly sum! Using the RFN HoF thusly, Jon could turn the unused portion of his gaming collection into a lifetime annuity that would see him live his golden years in style!