David, Supercar Kid is right. That tach you show pics of was on Ebay not long ago and we had some fun with it then too. It's not an original Yenko tach. You can tell by the obviously home made decal that looks like it was done on computer printer paper. It is however the right KIND of tach that was on the Deuces. Just an original HT/x. I'm sure one of the guys on here with a real Deuce wouldn't mind getting you a close up of a real one. But as far as info on these tachs, I'd say listen to what Supercar Kid and his brother CamaroJoe have to say as they (the Barr brothers) are a pretty good authority on this stuff. You should've made the trek to SCR6 to see their Supercar memorabila collection first hand. Incredible.
