I have a distributor of unknown origin that I would like some info on. It is a 25D4 with vacuum advance and a case number of 62941044 A, manufactured 11/65. The internal action plate has 17 degrees stamped on it with the vacuum unit having 7-13-5. 54411478 stamped on it. I know what all these figures mean but what I am more interested in is the advance curve figures. From what info I have available it would appear to equate to the 25D4 number 40568 A from an 850cc HC motor.

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1964 998 Cooper , 1968 Morris 1100