DW's crown is correct. The gen uses a winding stem with a 0.9mm diameter tap. Your 7734 movement is probably one of the later ones and these were supplied with a 1.2mm diameter tap.
If the watch was normally 10x its size, I'd notice a difference. In reality, I wouldn't want to get that close to your wrist to notice a difference.
Regardless, nice crown.
There's a seller on eBay that sells movement rings for ETA that cost $5 or something. I forget the seller's ID. The smaller one he sells fits the DJ case.
Hi alligoat,
Thanks for that measurement info though!
I tried the Clark's 25-135 but it was a little too tight of a fit once the bezel was in place. And, the cyclops was off centered from the date window. I'll give that C-118 a try. Thanks!