Hi Anthony,
We're not really certain how many Monaco 74033's were made whether they be blue, grey or black. But they are definately a low run version of the Heuer Monaco.
As for serial numbers on the PVD cases the answer is yes but they are difficult to read.
Here's a previous thread you may be able to get some more information out of. http://www.chronocentric.com/forums/heuer/index.cgi?page=1;md=read;id=35221
Cheers - Darren
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: Hi all...

: Again for questions:

: Somebody can tell, know, how many 74033 black pvd monaco was
: produced?
: Somebody can tell , know, how many 74033 B was produced?
: Do you know if it exist a serial number write normally on the top
: case or not?

: thanks by advance for your futur reply...

: regards
: Anthony