Help needed with Buzz Aldrin Accutron

[Barks]

Hi all
1st time post here, I live in Sydney Australia and I'm having trouble trying to find out where I can get some pare parts for my Bulova Accutron Buzz Aldrin Eagle Pilot 26B63B.

I've called the Australian distributor and a few watchmakers but no one seems to able to or willing to help me source the small screws that hold the battery retaining piece in place.
Hoping someone on the forum can help the new guy out.
Thanks in advance for your help Paul