You came to this forum seeking assistance. Received helpful advice from a member, replied correctly ( see below ) and then ignore the facts in the hope that you will dupe an unsuspecting ebay buyer !!! This seems at the least neglegent to me.
Noone is accusing you of creating a frankenwatch but after receiving the correct information you should at least declare it in a sale.

Not sure what to write in your ebay listing ???

Then edit your listing description - cut and paste your own reply still visible below !!!!!!!!!!!!!!!!!!!!!!!!!

: Thank you, so it seems that it is the making of 2 watches?
: Presumably non-original from the factory? That would answer why
: I hadn't been able to find another one listed or photographed
: anywhere
: In your opinion what would a sensible asking price be if I was to
: offer it for sale.
: I appreciate your information and advice
: Paul