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Could these be Australian?
The detail that links all these cards and points to an Australian origin is the printed border on the card. It is also found on other cards of known Australian providence:
Perhaps my cards without this designation date pre-October 1941 when O. C. Rheuben & Co changed to General Plastics; the card with the designation post October 1941, but pre 1951 when the Beauclaire label was adopted.
If you have vintage cards with this design, they may have been made by O. C. Rheuben/General Plastic, and perhaps even The Hermann Co (pre 1934) if the ‘H’ on the card with the small blue roses above is a hint!