I ran across an old tin of Rattray's Jock's mixture and it came to me today. The ad said it was unopened but the label had holes. For $10 I decided to gamble on it. It came in great shape with the seal intact and no rust that I can see. Now here's the question. Are there any good resources for dating an old Rattray's tin? What sort of age am I looking at with this old guy? This one says it was blended in Scotland, has the registered trademarks for both the US and Great Britain, has the ring-pull lid, and is in 4oz weight.