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The Wolber is a Champione De France SP1 in possibly 27" (it won't stretch onto a 28" Mavic Reflex, hence the damaged tread).
27" is what one used to call the size of standard tubulars. It is identical to 700c. There is absolutely no difference in size between tubular tyres marked 27", 28", 600 (one of my old Russian tubulars is labels 600x24) or 700c.
I realize it is confusing. 27" clinchers are, for example, ISO 639 and NOT the same size as 28" or 700c or ISO 622. With tubulars they are the same size!
Any modern tubular tyre will fit on any tubular rim-- even old wooden ones. The ONLY thing that might create problems with older rims-- especially alloy rims-- is the value bore. Some older rims had slightly smaller bores than some modern tyres may provide.
Wolber SP1 was a polyurethane belt-- simular in intended function to today's polyester breakers (the latest and greatest these days being vectran).
The tyre should mount quite nicely on a Mavic Reflex with the usual preperation (pre-stretching etc.) and effort-- I've found the Reflex, in fact, easier than some older Mavic rims like the Monthlery.
EdwardZ-
I think I meant 26", not 27" i.e. 650. I'm starting to doubt my own thumbs but I really can't get that tyre onto my rims - either the Mavic or my Enve's. Any of the other tyres I have I can pop on pretty easily.
EDIT - or maybe it is just me! - Another attempt and the Conti and one of the Barum Special have stretched on. Do you know anything about Barum, they feel very supple and light? Definitely not training tubs!
mustard
You make a lot of sense there - now that you point it out putting a lot of work into repairing a pretty standard, used, tyre isn't very logical.
The Wolber is a Champione De France SP1 in possibly 27" (it won't stretch onto a 28" Mavic Reflex, hence the damaged tread). You can see pics here. p.s. Any help in identifying the sizes of the unknowns on there much appreciated!