The 104 has open "6" in the F-G-H series (2003-4-5), close "6" in the E and I series and onwards ((2002, 2006-). I suppose you did not download my PAM spreadsheet.
Moreover, I just got info that the latest series (J series, 2007), has the "L SWISS MADE L" text placed very close to the "6", like the new Josh's and Andrew's 104.
So it seems that this new rep is VERY close to 100%...
The problem is now in the caseback. It states:
OP 6553 - Correct on the 104.
BB1028623 - Incorrect. That is a number from 2001, when the 104 was far from seeing the light. Anything above 123xxxx would be correct.
I0512/1500 - Doubly incorrect. The "I" series does not match the location of the "L SWISS MADE L" text. And the millesimation of the 104 on the I series was 4000 pieces (like on the J series too). J0512/4000 would be correct.