Oven thermostat replacement

I’m trying to replace a thermo on a 50+ yr old built electric oven. the newer thermo that was referred to me has more connction prongs than the old one which was L1 L2 and 1,2,3 . Does anyone have any experience with this. ?

Do you have the old part number?
Nat

Model -RA-46-36 is the number on the old controller

That doesn’t pull up anything, can you post a picture of it and I’ll go thru some of my parts books.
What is the number of the new one suggested?
Nat

I’ll do that tommorrow AM around 9 am CST .Thanks