Hi. Just an observation here from the sidelines. What you are seeing is the logo for PRYM. Prym is a very old company which produced metal fasteners. Until seeing your post, I'd only ever seen Prym on snaps, usually on vintage Cartier. However, Prym has been connected to Eclair, which is a familiar name in zipper pulls for Chanel. They also have been connected to Fiocchi Snaps, another name familiar to Chanel lovers.
If you look at the Fiocchi Snaps website you will see the Prym logo along with Fiocchi and EP, which is another familiar logo of Chanel zipper pulls. I think (trying to figure it out here) that EP possibly stands for Eclair Prym, because those two companies were or are (I can't tell all too complicated) connected. How FLOX and CCC fit into this picture are beyond me though.
The only reason I know all this stuff is because we have a series 3 Chanel keyholder which has Prym snaps. I thought it was an unusual logo to see on Chanel and researched it just a few days ago.
Hope this helps. Was planning to post some info on the general thread on this but your question came up while I was still thinking it over.