Well, I am amazed. Maybe there is a difference between Euro & USA '02s, but I find it difficult to comprehend.
The bottom one in the Cahsel pic is the same as I have on my November '73 built Touring, so, I know they were used past Aug '73 on Euros, and all 3 of my '76 '02s.
The middle one was used on USA (at least) early '70s cars (ie model 71).
The top one was probably for the late '60s cars.
So, if the broad ones were used up to Aug '73 then what was used for the model 73 cars ('74-'76)?
Here's a couple of pics of 1502s which I think answer the question as they were manufactured in '76.