Was this Omega Genève(136.0104) calibre 1030 messed up with?

Hello dear Omega community,

I am a brand new member of this very inspiring forum.
I came across an Omega Genève from 1974, 136.0104, cal.1030.
Comparing the photo of the movement sent by the buyer with the movement photos I can find online, there are some discrepancies: the bridge plate is missing the engravings and the movement calibre n. is part of the serial number.
Do you think this is still a genuine Omega Genève with calibre 1030 or should I be suspicious? Thanks in advance for your knowledgeable contributions.