as for your meter impressions:
the top 2 are similar to type B7 (Postalia machine), but yours are DC (double circle) on the date stamp section, while only a SC (single circle) is listed. this may be due to the advertising/slogan added to the left?
3rd row, left (TRIBUNJ) is a type PO6.1
3rd row, right (ZAGREB) is a type PO2
4th row, left (Cakovec) is a type B6 (Hasler "Mailmaster" machine)
4th row, right (Jastrebarsko) is a type PO8 (Tera Printer machine)
5th row, left, is another type PO2
this information comes from the International Postage Meter Stamp Catalogue:
https://en.wikibooks.org/wiki/Inter...alog/Croatia