type I tapes (other than HF and CD-series)
CHF 60 (1st gen - earlier case, standard /pressed pit in retainer area, thick line beneath logo on back/)
CHF 90 (2nd gen - earlier case, no pit, no thick line beneath logo on back/)
late 70s-early 80s model, Nigerian market version
CHF 90 (3rd gen - later case, standard /no pit/)
early 80s model
CHF 60 (3rd gen - later case, standard /no pit/)
early 80s model - Iran market, with extra logo: "Electronic Elements & Instruments P.D.C."
CHF 60 (3rd gen - later case, pressed pit in retainer area, dots logo present /introduced 1982/)
mid 80s model
FX I 90
ES I "Stamina" 80
late 90s model ?
early 00s model ?
(c) & (p) 2022 ゆう