How old is your bottle of dimple whiskey marked at 70 percent proof and 13 ozs?

I can't tell you the age of your bottle of Dimple whiskey. I don't have access to information about specific bottles or their history.

Here's why:

* No information about the bottle: As a language model, I don't have access to real-world information like the production dates of specific bottles.

* Age is not always on the label: Whiskey age is not always listed on the bottle.

* Proof and volume don't determine age: The proof (70%) and size (13 oz) are standard measures and don't indicate the age of the whiskey.

To find out the age of your bottle, you could:

* Look for a bottling date: Sometimes, a date code is printed on the bottle or the label.

* Contact the distillery: Dimple is a brand produced by Diageo. You can contact their customer service for more information.

* Consult a whiskey expert: A knowledgeable whiskey collector or enthusiast might be able to help you identify the age based on bottle design or other clues.

Remember that even a very old bottle of whiskey might not be safe to drink if it has been stored improperly.