Switzerland Officials

Posting these officials here for further identification per request from another post: https://goscf.com/t/65303

All of the circles on the following Officials measure approx 21.5mm, except for the green printed ones, which measure approx 20mm.

The green ones are Zumstein Frankozettel (FZ) 3; circle measure is given as 19.8mm. First issued 1928 but this type was used for many years -- note the 1957 cancel.
The black ones are all Zumstein FZ 1. First issued 1911 but also used for years.

No scarce ones here, unfortunately. Still, the mint FZ 1 if hinged with gum is worth something like $20, NH double that. The used are each worth a dollar or two if sound. There might also be a small premium for cancels, but that knowledge is beyond what I have for references.

My thanks, HB. I was not able to find them in the Scott catalog. I appreciate your help.