I was given this bottle of whisky today. But not for my own consumption. I was given it to sell and raise money for a local charity. My knowledge of whisky is nil. Is there, out there in Bipland, a whisky expert who can help me? Any ideas about where I can research the value of this bottle would be very welcome.

The label says:

Glen Grant
Glenlivet Strathspey
15 years old
26 2/3 fl ozs
70 Proof
Bottled in Scotland
Hall and Bramley
Glasgow C2

Any help gratefully received.