Question about very old GMT-Master

[cuco]

Hi, back in 1969, I bought a GMT-Master, the watch of my dreams. Of course, the paperwork is long gone by now and I would like to find out some info about this watch. The only document I have about this watch is the Service Instruction Booklet. The number 2109XXX is perforated in it, and I assume it's the watch number. Above it and also perforated is the number 1603, wich I have no idea as to what it is for, or about. When I search for the number 1603, I get a reference to a Rolex Datejust, not a GMT-Master.

I just sent this watch to be refurbished, so I don't remember if it has any markings on the case.

Can anybody in this group can provide any information that will help me, after about 40 years, fall in love again with my GMT-Master :-)

Thanks in advance for any help,

Cuco
San Juan, PR

[DSJ]

Hi Cuco, welcome to TRF. All I can tell you from the information provided is that, if that number 2109xxx is your S/N, it DOES date the watch to 1969, as can be seen here:
http://www.oysterworld.de/1/index.htm

Insofar as the model, it should be a 1675.

[Stratton]

1603 is the model number of a steel and gold Datejust. If you sent the GMT to Rolex for a service you will get a service guarantee, the paperwork for which will have the serial number on it which probably won't match the perforated number on your Service Guarantee booklet. You were probably given the wrong booklet for a different watch. Whoever is refurbishing it can give you the serial number for it. Make sure they don't replace your tritium dial and hands with new luminova items which will devalue the watch. Personally, I would only let Rolex themselves service this great watch

[cuco]

Thanks for the info, DSJ, and thanks for the advice, Stratton. That's what I thought it was, I got the wrong booklet, but after about 40 years, I don't think I stand a chance, hehehe.

Thanks again,

Cuco