This is a list of elevator fixtures that have been used by Nippon, a defunct Japanese elevator company that has been acquired by Schindler in 1987.
1960s or 1970s
The buttons are white, round plastic that lights up in white when pressed. Floor indicators inside the car are horizontal floor counter with orange illuminating numbers and installed above landing doors.
1981 Nippon hall station and car operating panel with Round buttons in Hong Kong. (Video by Lift Wong)