I do have 2 NOS Dunlop #3 Tubs, marked 27" I had them at LeCirque, I have NOT inflated them or glued them BUT they DO go on a 700 rim, tight fit, what would happen after a few fittings and riding them, they may stretch??? 27" rims are of course larger in dia than 700s Cheers John Crump OldtightfirBrit, Parker Co