Lee,
Congrats on your Monaco.
For a crystal, Rob has some here: http://www.nakaiwatch.com/parts/crystals/monaco.htm

For vintage straps, see Squinky's store here: http://stores.ebay.co.uk/squinky?_trksid=p4340.l2563
He also advertises in the trader section of this site (see link top right)

Stewart

: I recently purchased a 1533G Monaco. It's in need of a new crystal
: and I suppose a gasket while I'm at it. I would also like to
: purchase an original style band and original buckle. Any help
: would be appreciated.
: Regards,