I assume the record being pressed in the US was to do with oil crises and labour issues in the UK 1973/74 ? Or were some jacketed and sent to other worldwide countries / US distribution ??
Charlie Kunz had earlier cut Piano Roll of Walter Donaldson Fox-Trots. A couple of the tunes feature on this LP and related EPs but I dont think all were recorded as a special to Donaldson on one disc [YouTube Video]
I suspect it will be a retailers. The mother-in-law could never resist a bargain (rather than thinking what is the true worth of this ?) And I think it was a family from new one rather than a bulk charity incoming pile one.