This is an ORIGINAL  gearbox first motion shaft .I call it #5, as I have a whole box of these things, for various English cars. It has 10 splines and 23 teeth on the chipped gear.I believe this fits Austin Healey or Jaguar, but am not sure year or model. Any advice to identify is appreciated. It is about 9.5 inches long. Please see detailed measurements with a caliper, and compare with yours. This has Chipped teeth.This is also the best clutch alignment tool made, for these cars,  if you only need that, splines are good.  But if using in a gearbox, see my ad for First motion shaft #4, exactly the same, but with Good teeth but More Expensive. .. NOTE; I also have other First Motion shafts,; please contact me..For more  parts, please see Jaguar or Austin Healey sections of my eBay store, or contact me    1 954 JAGUARS or  1 954 JAGPART .  I have several  hundred original Old English parts 1949-1994  like this on my eBay store, Old English Motor Company.  I have a 4 decade  hoard  more in my time-warp warehouse; from 40 years of saving  parts for my restorations.  Note; Shipping in the US is FedEx, Out of the US is FedEx..Thank you, James Dean. thejaguru . Note, I am now located in SEBRING, FLORIDA