Hi Josh , I bought it from a reputable vintage shop in Osaka .
Like what Enkidu said , it is a 36mm .
Close up shots? I am not a pro photographer like you
Just an iphone photo guy...
I don't think i can capture the details with it ..I can try though ROFL .
@Enkidu . Anything i should worry about ? Normally i wind it for about 20 rounds ..didn't bother to fully wind it .
Hi, gapnap,
You have a great watch, I truly regret divesting my GS 4520-8000 in 2008 and the GS Cal.6146-8000 in 2009. I would go easy on the winding. Once you feel there's sufficient resistance, it will be a good time to stop. I learnt this the hard way. My 4520-8000's mainspring snapped because I wound it up too much. Happened at the end of 2007 I think. Thong Sia said could not repair it (as usual, sigh!!). The technician sifu openly told me "this watch is meant for you to keep; it's not for daily wear anymore". So I sent it to the shop at Selangor Kompleks - the shop manned by 2 really bossy women

. The cost of repair (mainspring + changed the crown because the old crown was also worn + basis maintenance service) cost less than RM200 I remember, but the wait was pretty long because of the spare parts.
I am not sure if those old articles in the old SCWF (those uploaded at the time of Dr. Wayne Lee and Kevin Chan) are still accessible. You may wish to google and check. I recall there are some pretty good write ups and pics on the GS Hi-beat vintage (Cal.6145, 6146, 6159, 4520 and 4522).