Is it the typical plastic two part assembly? The turn signal arm screws into one of the pieces? That has the wires that go down the column about 2 feet to a plug?
Here is what I found...
Taken from volume 1 J series Parts catalog F-76073 R3 1962 through 1973
Switch, Directional Signal
All LHD (left hand drive) 8121438
All 232,258,304,327,350,360 1972 and prior
(Including hazard warning) 948847
All 230,232,327 1971 and prior (less hazard warning) 933849
WAG 327,350 941975 I think this is for the tilt column in an X model
All 258, RHD (right hand drive) 948847
Thats all I know