Joined: Jan 2010
Posts: 9,813
Likes: 1,790
From: Northern California
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
With the folding pedals, at least you can go with your best running shoes for when/if one of the old tubulars explodes.
Be sure to inspect whether the glue is actually still holding the tires to the rims, else you run the very real risk of a tire literally twisting inside-out with the fragile casing then contacting the pavement and then BOOM.
I myself have no idea, but what makes you think that this is a real Rensho?