105
I'm liberating this one from the evil empire. The original poster recently saw this one at Nagoya, evidently one of the few-ish remaining ones in service. Their post title was:
Orange backlit LCD, check! Phone card slot, check! Japan in 1982 was the future! (An endangered species spotted at Nagoya station)
More examples & angles:
https://www.google.com/search?q=classic+green+NTT+public+payphone+from+Japan&udm=2
Oh yeah, look at that. I hadn't even paid attention to that (major) detail. :S
I've seen specialised charge cards used in a number of cities in my country for various things, some niche, some very public, but didn't know that such was the case with payphones.
I imagine that such a card used for a TARDIS would be rather pricey. :P