It's been a while since I've posted! I'm offering my Old Stamp K Zildjian Istanbul 20" Ride for sale. Asking $1350 US plus $60 shipping to US from my place in Toronto.
See my Reverb listing for photos, details, and a sound sample:
https://reverb.com/item/29642797-k-zildjian-istanbul-20-ride-old-stamp-1940s
Feel free to DM me with any questions.