Bottom has D230, an upside down triangle, then what looks like 12-5. Beneath that is M1641 and something else I can't remember and can't read on my pic. Any ideas?
I do not know of anyone who collects or keeps track of bottles of this vintage. Perhaps as they age some folks will do more research. I'd really like to see a list of D-xxx numbers with names of associated distilleries.
Jim