help required with an Oyster Circa 1969

[junger]

I inherited this watch and have had it locked up in a box for 3 years.
I took it out of the box today and had a look at the detail.
As can be seen in the photograph the model states 6605 and the derial is in the 279 thousands, am I right in thinking the year is 1969 (based on the serial number batch) and is there anything that could help me identify the watch type. Additionally, I do not seem to be able to change the date, does this indicate a fault or am I missing something. Thanks in anticipation of your help.
Junger

[T-Rip]

is the "gold" wearing off in the bezel?

The ring that goes all the way around the dial of the watch?

[junger]

no, its the photo, it's lit from the left hand side

[junger]

all sorted, thanks, i didnt know you had to wind the time backwards to affect the date, and it is a perpetual oyster from 1969