1. MF, bare brass, no other markings, about a 7, no shank ring
2. MF, shiny gold brass, marked Vintage, 7*, Double shank ring
3. MF, Rhodium, marked Hollywood, 7*, Double shank ring
4. MF, Rhodium, marked Hollywood, 10, Double shank ring
5. MF, bare brass, marked Andy Sheppard, 10, no shank ring
To the eye there's no obvious difference in baffle and internal geometry in any of them... Whatever MF did to alter the mouthpiece sound was subtle...
3-5 have integrated lig. MF added the integrated lig at the latter end of production. A question to ask concerning your prospective piece
@Jules is... Did the Super Vintage predate the integrated lig?
I would say that the absence of script spelling out the model makes it much less likely to be Super Vintage, especially given there's a cryptic 'M' on the table which smacks or earlier experimentation. The one thing that's Super Vintage is no shank ring, but then no1 and 5 don't have them either
All of this uncertainty (from the above comments the seller won't give you a reliable history), alongside not being able to play test it, means the price should be under £300