Looks like Holec Hazelmeijer switchgear to me.
This is extensively used in The Netherlands and Germany with the diazed fuses.
Type II as Arend quotes the colours , this range goes up to 25 Amps.
The 3Ø two row look like the D III type (bigger size) and are 35 Amps, black porcelain insert.
50 Amps (white) 63 Amps (Orange).
The din rail MCB's are used all over Europe and in New Zealand, although in non MEN countries these MCB's are 2 pole and switch the neutral as well.
Same applies to the round white switches on that panel, these are the group isolator switches.
There appears to be a lot of rust on the terminal screws, I take it that this panel was not in use prior to taking it out.
Interesting to see the US 110 Volts receptacles used here.
