Duffy's malt whiskey? There is a large D with a small B inside it. There is also a large W over the D. There is a shield below it with a lighthouse inside the shield.
After you wrote WDB I looked at the bottle again. I originally thought it was DB w 2 big letter V's but it is a W. Below it is a crest or shield with a light house inside the crest. Thanks.
I found multiple bottles on a construction site about 10 years ago. I have searched a little bit over the years trying to identify them with no luck. Any information would be appreciated.