There are at least about 1,500 of the 99041 that have been imported. And 63 of the 99021. There may be more, that's only back through about 2017.
Believe you got it backwards.
I emailed CZ USA about the 99021 back when I first bought mine. Asked them for any history and quantity. I believe it was a Derek that responded. The imported quantity was just under 1500(1480 or something like that, I would have to dig pretty deep to find that email) There was a huge string of info on here about it. Scarlet??? Started the topic. Will see if I can locate it.
Yes, I believe this is right.
The 99021 started out in greater quantity, and then the 99041 has caught up and IIRC outpaced now by multiples -- but again, still relatively rare with probably in the 5k to 10k quantity of total imports.
The steel frame and longer rear beavertail are the main differences vs the standard alloy P01 Classic/Omega (has ambi like omega)... The frame is also slightly wider too. I think the difference between 99021 and 99041 is largely just slide markings.