Thank you, gents. The search terms for Carrera allowed me to find the crown, but it seems to be priced between $150 and 500. I have seen both signed and unsigned crowns on the Monzas. I wander if this changed between Calibers. It seems like the Caliber 15s (later ones) are mostly signed. No immediate results /hits on the crystal.

Either way...my watch with issues is likely going to be end up more expensive, as compared to sourcing one without any immediate needs. For some reason I did not learn this lesson with old cars and motorbikes and continue to be attracted to mangy strays.
:)

: I could be wrong, but i think the crown on a Monza is unsigned. I
: stand to be corrected