From tickey, obsolete South African slang for a threepenny coin (the cost of a payphone call at the time of the term's origin), and box.
tickey box (plural tickey boxes)
- (South Africa, slang) A payphone.
- 2002, Michiel Heyns, The Children's Day, Jonathan Ball Publishers (2002), ISBN 9781868421251, page 81:
- […] He phones his mother in Hopetown every afternoon from the tickey box in the hostel.'