This watch today is one of the special editions in the 1481010 range, and is a limited version of the black leather D500 I posted in March (
link).
The watch is made in conjunction with Agosto, which is a clothing shop in Shibuya, Tokyo. The shop sells designer clothing, including its own Agosto designer collection.
It has a D500 'shutter' module in a lightly gold coloured case (compared to the normal silver colour). The strap is a brown textured/patterned leather one, with a red leather lining stamped with Agosto. The watch has the normal D500 functions (time, alarm, chronograph, and timer), and usually shows the seconds on the 3-line mirrored LCD. I refer to the 'shutter ' as when the time is activated, the screen scrolls open like a shutter.
The box details the origin of the watch, and states:
Citizen "Watch" Independent
This wristwatch came into the world with epoch-making high technology of Citizen and distinct sensitivity of Agosto.
The full model number is D500-L20867, and was made in 2001
More information on the 1481010 range can be found
here