Vintage Zildjian 18" Avedis Cymbal with Stand - 60s ? 70s ?

Description

You are bidding on the 18" diameter cymbal and stand shown in the photos, most likely from the '60s or '70s.
I do not know much about percussion instruments, but it seems to be in working order, even though it is worn from years of use.  When extended, it reaches about 43" or so.
Please feel free to reach out with questions.