Yeah this was put together before the new sneed case came about. Regardless, it's stellar as once the gen insert and dial go on, you'd hardly notice the bezel.
I have 2 crazy gmt 2Cs equipped with gen dials and inserts. One is with the CHS, and the other was procured from concepta and came with a corum 2893 movement.
And guess what, i've another gen bezel and insert, and a few 2893s hanging around waiting for something to be done! I must be nuts.