How old is my whisky bottle/box and how little is it actually worth?

My husband was recently given a bottle of Ambassador 25yr Scotch Whisky, 4/5 qt. size. We know it was imported between 1945 and 1950, thanks to tax stamps, but nothing beyond that, so a more exact date would be great if possible. I can send photos. The bottle itself is still sealed with a lead seal from Bloch Brothers (Distillers) Ltd. - the seal reads "Bloch's Whisky" - and the IRS distilled spirits import tax stamp (Series III, which dates it to 1945-) is still intact. There is also a Texas State Tax stamp on it that sold for 25.6 cents (dates it between 1945 and 1950). I know the whisky itself is worth little, because whisky doesn't age after it is bottled, but my question is: is the bottle itself worth anything? We also have the original box that it came in. On the side of the box is a slogan that says "Yes, every drop is 25 years old."

Thank you for any and all help!