6BB is the NATO prefix for a Royal Air Force issued watch. The other numbers (924-3306) will signify the item for stores purposes ie a wrist watch, chronograph.
You are right about the meaning of 2762/67.
As for knowing where it was issued, the short answer is no. The only records about individual issues of a watch will be the MOD stores paperwork, to which we have no access.
Cheers
Foggy