In general the country where the record was manufactured isn't always the country that should be chosen I think, some record companies used pressing plants from other countries.
In this case export issue from Germany would be fine with me (this one was also recorded in Berlin). Tri-Ergon had at least a Dutch marketing division, and more than 50 Dutch releases. (Source: a Tri-Ergon article in a 2002 issue of De Weergever.)
I've changed the country to The Netherlands so it's with the other Dutch Tri-Ergons we already have. It's certainly made for the Dutch market. But if these should all be listed as export issues then you can change that of course.
The ACA Master Book has these 2 titles listed with master numbers 1027/1028 (with artist listed as "Party Record"), I'm not sure if these are the same as the tracks on this record.