Other than making them myself and Etsy, does anyone know of a supplier of small envelopes for a playing card, with a panoramic window, and the opening on the short side? (see pic example) Many thanks.

Click here to view attached image.

Here are some A7 size that I wonder if you could cut in half to make two out of one. That would also change the opening to be on the short side.

https://www.envelopes.com/business/windo......wn-kraft

An alternate way to look at it would be to start with a cellophane or transparent envelope to begin with and paint the outside edges opaque, then insert a piece of paper or cardboard to act as a background.

Here is a link to an Australian site that produces what you are after. Pocket Envelope with a window. Can't tell you prices but it may be worth a look.
https://www.envelopesolutions.com.au/Custom-Made-Envelopes

Cheers

Thank you all for the suggestions, greatly appreciated 😊