It's amazing what you can find in shops. I'd been looking on a well-known auction site for an old Tamron Adaptall-2 SP 300mm lens to use on both digital an film. Eveytime, outbid. Now the lenses on offer at the time were not in great cosmetic shape, so when I spotted this mint condition lens & case for only 30 pounds I knew that it would be money well spent.
Here is the lens:

And here are some samples (click to enlarge):





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