Dr No[Moderator Omega - Wristscan]
37599
I'm lost, Walter; the 30T2SCrg had 16 jewels . . .
. . . and interestingly enough,30T2rg (subsidiary seconds) movements . . .

. . . had 17, but don't recall jewel counts over 18 in any 30 movement. I'll have to check my sources.
Intrigued,
Art