Nice find, Buckstix
I have a Ets Braekers double from 1926 in 500NE. (It's in the back of the safe)
I would say that it is light for caliber (below 10lbs IIRC). Yours certainly appear to be light too.
Braekers made or resold great stuff.
I think I have a catalog. I'll see what I can dig out.
Best regards,
WC-