Whaaa...you mean they make different diameter spool hick-a-ma-bobs?

Ok, here's an illustration, don't y'all laugh....or if you do laugh with me & not at me, k?
Here's my "Telescopic Spool Pin(-minus the felt, that got lost?)" per my 1985 French to Spanish manual.......
Here is the Mettler thread hole on the left, Coats & Clark thread hole on right.
There is a difference in size on the spools obviously.

The machine is from 1985 & I suppose thread was universal.

Or there was an embargo on German threads that year?
Any suggests on how to accomodate my relic of a machine for these new fangled imports?

Here is for the DIS boutique wall of shame, my Singer Merritt 9612 circa 1985

......
Hey, vintage is all the rage now-a-days.

Come on y'all join me in posting yer vintage sewing machines!!!! Let's see yer babies in action.