The 73633G (as previously discussed) looks black and dark grey and mid grey depending on conditions and the 1533G looks silver, gold or light grey.
These metallic finished Monaco's fascinate me most, although a 1133b may be the holy grail (although not as rare as manual and cal15 versions), for me they are not as nice in the flesh or on the wrist (very nice all the same!) but perhaps the transitional 1133b is more interesting with the metallic finish ...

The quest continues...

: Im hooked - i can't help it!

: Many thanks to the latest supplier of my drug of choice - i think
: this will keep me on the straight and narrow for another few
: months (i hope!)

: I must concur with Abel about the 1533G (G for grey? Not sure its
: sometimes grey, sometimes gold sometimes silver!) it is by far
: the most wearable, even more so than my 73633G and has not been
: off my wrist since last Thursday.

: 2 down, a few more to go...