16 mm film identification

[Nick Vermeirsch]

Hi there! I recently got this 16 mm film, without titles but anyway with a historical content. I don't know much about this film, could anyone help to identify (distributor, ...)? I was thinking it was DEGETO, but not sure... Photo's during projection are visible through this link:
https://photos.app.goo.gl/LaRyWeEofNdUn6uM8

Thanks in advance!!

[Maurice Leakey]

Nick
I have spent some time with a dictionary!
Zon en Zee is a seaside town in Belgium. It appears to be a gathering of members of the A.C.V. (Confederation of Christian Trade Unions - formed in 1904) in 1969 to celebrate that after 65 years they have 650,000 members.

[Dominique De Bast]

It's obviousely a Belgian film Young King Baudouin seems not to be yet married with Queen Fabiola at the time the film was shot, so it's maybe from the '50s ?

[Maurice Leakey]

1) The A.C.V. was formed in 1904.
2) They are celebrating their membership number after 65 years.
3) Therefore, I consider the film to be 1969.

[Dominique De Bast]

I didn't see Maurice''s message before I posted mine, so 1969 is, following the informations given, the precise date the film was shoot.