Excellent plates, I asked GPT chat and it said that this plate was produced from around 1954 to 1970.
Vintage 14" Zildjian Avedis Hi-Hat Cymbals 822g/785g
14" 1970s Vintage Avedis Zildjian Hi-Hat Cymbal Pair
Hi-Hat Cymbals 14" Zildjian Avedis Vintage USED! RKAV150426
Vintage '80s Zildjian Edge Max Hat, hi hat Set 14" no clamps, felts or stand
Vintage 1980s Zildjian 14” Quick beat Hi Hats
Vintage Avedis Zildjian 14" Cymbal 1080g Genuine Turkish Made USA
