Haig's Gold Label

I’m auctioning a bottle of Haig & Haig gold blend whisky on eBay http://cgi.ebay.co.uk/Haigs-Spring-C...Bottle_Pots_ET and have been trying to find out more about it, can anyone help me please.

The bottle has a Spring Cap top with Wording to Foil wrap, it's unopened and looks very old. The nearest I can find to it is a (Late George VI) / Spring Cap / Bot. 1940s However there is a difference between that bottle and the one I have and it's the coat of arms. Due to its age the label is not defined but the coat of arms looks to be a shield with a unicorn to each side. I believe this to be the Royal Coat of Arms of the Kingdom of Scotland.

Any help with history of age or coat of arms would be appreciated thank you.

Haig's Blended Scotch Whisky Gold Label
John Haig & Co Ltd
Owning Haig & Haig Ltd Distillers, Markinch. Scotland