Any parts store will give you a compatible coil. It doesn't have to be a Delco.
Okay thank you!
Pelle, If you are restoring to original the 1965 Master Parts Book lists the following in Parts Group 2.170:
1960 to 1965 Cadillac Part # 111 5134, stamped "134".
If you want the original AC coil with the correct # stamped from the factory when delivered from the factory that would be the one. Keep in mind Cadillac often substituted with different parts and part #'s as the years rolled on.
Fast forward to the 1974 Master Parts Book and it lists
1964 to 1973 Cadillac Part # 111 5202 Stamped "238"
With that in mind, you can get many all black aftermarket coils that will have a similar appearance and work just as well. For example I have been selling the Duralast C819 sourced through AutoZone for years. I sell them for $23 and can ship 2 to 3 day Priority to US destinations for $7 for a flat $30. If interested in one (I currently have 4 on the shelf), email me at email@example.com.
Thank you for the information, and the very quick response! I will keep this in mind for the future and other parts, but I just found a similar one at one of my friends! Thank you once again!