Jim, once upon a time I bought a number of cameras that had 105/4.5 Comparons in, depending on the camera, cock-and-shoot or press Copal #0 shutters. The vendors thought they were selling cameras, I was buying shutters.
Anyway, I tried some of the lenses out. As expected, lousy at distance. As expected, quite good close up below 1:1 and above 1:1 (but not far above) reversed. There are better ~ 100 mm lenses for closeup work, but there are also worse.
I can't speak to your 90/? Raptar but I've tried out two tessar type Raptars sold as good for near distances. 50/4.5 Micro Raptar (with diaphragm), lousy under 10:1, ok above. 138/4.5 Graphic Raptar, just lousy at all distances. I wouldn't reason from tessar type Raptars, if that's what your 90 is, to other tessar types.