House of Lords Blended Scotch Whisky

While cleaning my parents home after they passed away, I found an unopened bottle of "House of Lords Blended Scotch Whisky" 4/5 quart, 86 proof. On the right hand side of the bottle it is written...William Whiteley Pitlochry Scotland. On the bottom of the bottle it is written...Whiteley Liquor Bottle Scotland 5834 and below that # is the # 5. On the label it states that when it was purchased it was 8 yrs old. The seal on the top of the bottle states "US International Revenue Tax paid 510573799". I remember this bottle from when I was a teenager at home, and I am now in my 60s.

Could you tell me if this is worth anything or even if the contents are drinkable. Thank you.