Sorry about this...
We can't actually ship Port Dundas 1978 (cask 12470) - Xtra Old Particular Platinum (Douglas Laing) to the United States at the moment (although we're working hard to fix that).
In the meantime, our friends over at The Whisky Shop might be able to help you out.
Thank you for your support and understanding 🙂
-The folks at Master of Malt