The term "scotch sighting" doesn't really seem appropriate for this particular clip. A better word for what you're about to watch would be "glimpse". There are actually two brief Black Label appearances in Raiders of the Lost Ark but try not to blink or you'll surely miss 'em both.
Normally we wouldn't include such a short clip on this site but an exception will always be made in the case of Harrison Ford movies. Anyone familiar with the history of this site knows that Mr. Ford is the reigning king of scotch on the silver screen.
You can watch all of our previous Harrison Ford scenes here, and here's the link to all of our Johnnie Walker sightings.