The inners will almost certainly be latex, only the cheaper training tubs used to have butyl tubes

. If they've been stored properly, ie in the dark indoors, mounted on rims but not glued, off the floor and maybe with wheel covers, then the tubs should be OK and usable, but if they've been folded up for 17 years and left in the shed, then probably not

. I have some NOS tubs which are at least 20 years old, maybe 25, and they are perfectly usable, although the tread is not as supple as a new tub. If the casing and tread is in good condition, then I think the inner tube should also be OK. The problem is with the casing and tread if they've not been stored properly.
I also have this Vittoria silk tub that's around 10-15 years old, and the ride is amazing, it makes a whooshing noise as you're riding along

.
Campag Nuovo Record / Mavic GEL280 front wheel 28 spokes, Vittoria Pista CS Seta tub. Complete wheel weight 820g.

Just my opinion, vintage tubs should be used with "period correct" bikes, if you're just looking for a tub to use, then a new tub would be more appropriate, even if they're ugly.