Rare, 20" ride, this one is a tougher one for me because it is one very cool old cymbal! This thing is as good as any ride I've played in all my years! I have spent years researching what this could be and I land in the same place every time. It shows to be an old hand hammered Italian made UFIP Ritmo or Solid series 20" Ride Cymbal. This this weighs in at around 2445 grams so it has a brighter ping and the sustain is amazing. Here's some of the research info I found;

It points to this cymbal being an early 1980s to early 1990s UFIP Ritmo or Solid series ride that has had its ink logos polished off over time.

The standard-sized center hole rules out the older 1950s–1970s era (when Italian factories often used smaller mounting holes), while the traditional, smooth lathing narrows it down perfectly:

Why it's likely a Ritmo or Solid: UFIP's other popular lines from that era had distinct surface textures. The Natural series was unlathed and dark, and the Rough series had prominent, coarse lathed bands. A standard, smooth lathed finish is the signature look of the flagship Ritmo line (or the slightly heavier Solid line). It is essentially a premium, Italian rotocast B20 bronze cymbal hiding in plain sight—perfect for a drummer who wants a classic, clear, heavy-hitting ride sound without paying the brand-name premium of a modern stamp. This combined with the smooth 1" inner lathe edge is very good provenance for this cymbal. This will give you that 80's sound without breaking the bank! No damage to this one and is in really nice shape. This one has been cleaned and has some light finger prints, tiny bit of tape residue under the bell, and light stick marks. Played responsibly and used sparingly by a guy who used it in his home studio (Me!) in his 50's and 60's. Please look at the photo's carefully and ask any questions you might have before you purchase. Flat rate shipping of $30.00 to any of the lower 48 United States of America. Thanks for looking!