Jaskolka: Polish
Elfin: British (except for Australian, Chinese and Russian replicas)
Wilo: East German
WB: Brazilian (I’m assuming it’s a WB250)
OTM: Russian
AH: probably Arne Hende of Sweden. He made mainly replicas and miniatures of other makes.
BWM: German
MAP: does it say ‘MAP3’? If so, it’s ‘Marz’ in Cyrillic - a fairly common Russian engine
Micro: American
AMCO: British
Bonner: should probably be ‘Bonnier’ - if so, French
KMA: probably really KMD (the Cyrillic thing again). Russian
I think that Star might be Russian, but I can’t remember for sure. If you’ve got some photos of ‘j’, ‘R’ and ‘Xaplkob’ we should be able to work out what they are.
Cheers
Steve