1976 three on the tree question

First I hope this is the right section and if not I apologize. Second does anyone know what manual transmission was actually in the 1976 feather duster. From what I have seen from a few ads and Wikipedia most are a automatic and the manual ones are according to Wikipedia a 3 speed with overdrive. The issue is I can seem to find a mention of them giving the feather duster a plain 3 on the tree. My Grampian swears his didn’t have the overdrive and the pictures he has of it show it as defenetly a colum manual so did they make a column shift three speed with an overdrive or am I missing something. Thanks for any help.