I have 2 coils from my 83 mondial qv. Car ran fine (i took them off the car as im doing an ev conversion). I will check the numbers and send pics if you want. Im based in san Francisco, CA, USA.
I may have a working pair with new coil modules (would only sell both as a pair tho)... what year is your Mondial? DM me if your interested
AEI500B are used on many Fiats with part nr. 5965770. If you find an original one for Fiat it would be a Magneti Marelli or you could go for an equivalent aftermarket coil like Facet 9.8001.
Lancia als0 has fitted this coil on some models, but I guess fiat and Lancia are less popular in the US then the Mondial Ps. the QV coils are a different type then the 3.2.