The flap below is purportedly from Kittan Lodge #364. It has recently begun appearing on eBay from the same seller who has offered a number of suspicious items.
As you can see, it has a White Border rather than the Green Border on the S1. I have contacted a couple of folks in the lodge, to determine if a white bordered flap has been ordered for any reason.
The initial response I received was that it was unlikely the lodge had ordered it, but further questions would be asked.
If it was not ordered by the lodge, it will be designated the ZS1.
It looks like I have been had. I bought one of these on ebay thinking it was an S2. The border leans toward the gray side.
I still need the S1 to keep my current name/numbers up to date.
Jeff,
I guess the border could be a light gray.
I am still looking for further confirmation, but my initial sources say they do not believe it is a lodge issue.