My friend who won a 1995 black gold frogman (model: DW-8200B-9A) from ebay seller bbtiesto have asked me to help him authenticate.
Upon close examination, I found out that the watch is a complete fake. The seller modified the watch to make it look like the original.
These are the actual screen shots of the full auction (*In case he tries to delete the link to his auction):
Comparing with my own:
Comparing with that on Yahoo Japan auctions:
From the auction, it was very obvious that the seller has modified the watch and as such mislead people into thinking that it is the real deal.
If you search the forum, the same seller has tried to pose modified DW-6900 real blacks as the real deal about a year ago.
Do avoid him at all cost and if you feel suspicious, post the link here to ask around before sending payment.
Hope this helps.