Here are the 3 watches I currently have that I consider frankens. Remember that my definition of franken might not be the same as yours, so please don't go crazy about whether they are franken or not.
The one I have had the longest (3 months or so) is my TC v6 with gen bezel, crystal, and crown.
And the 2 I received this week are my myanmatt datejust with an ETA movement, gen crystal, gen dial, gen crown
and my two tone 16613 with a 21j movement that I am planning to make in to a great 16613 frankenstein using a TC case and 18k gold parts. It has a gen (water damaged) dial and a gen bezel insert, both of which will be used in my project. I really love the look of the water damaged dial, it has tons of character.
Sorry for the dust and lint in my pictures, forgot to wipe em off.