This is an early 1970’s U.S. payphone. Looks very similar to the ones in the 50’s and 60’s. The basic design could easily be retrofitted for future updates as technology improved, such as in rotary dials, push buttons, coin return and even the style of handheld receiver. Cheaper to update them at the time, rather than remanufacture them.
(pardon the crappy background. The focus is the telephone)
Love the level of detail, right down to the light patina of corrosion on the chrome and the fingerprints on the dial and the bends in the flexi-cable on the handset. Makes it look like it’s seen the minor level of abuse that public payphones of that era would often see. Nice work!