I recently purchased an rather old holland bike, with the frame from Veeno, a extinguished dutch bike manufacturer. I cannot precise you which is the production year of the bike, but I can tell you that some components have the date of 1983 written on them. The bike is very well preserver, but unfortunately the bottom bracket is totally broken. I live in Porto, Portugal, and this kind of bikes are very rare, so it's very hard to find any kind of parts for it. I visited some trustworthy bakeshop and they told me that it would be impossible to find it here, and my best luck could be getting it from holland.
The bottom bracket that I'm looking for should have a 150mm long axle with 55mm to the left and 45mm to the right, The boxes where the ball bearings spin should have 40mm in high and 13mm and 15mm in with for for the left and right side respectively. I should also tell you that the lock of the pedals is made by a peg or linchpin.
I'll attach few photos of the bike so you can have some context.
I would really appreciate that you could help me, because it would be a shame that a bike so beautiful as this would be left in some corner for such a small damage.

I thank you in advance for you time.