What brand is this shower/tub faucet

[Iwishiknew]

I do not see any brand name. I can get to the screws underneath the cap of each handle, but after that, I am not sure what gets loose next....I am trying to replace the cartridge, since this is leaking/dripping cold water.
Any help would be greatly appreciated.

Attached is photo.

 

[Iwishiknew]

It was an old EMCO....cannot find a similar model anywhere like this. Anyhow, I had to get to the cartridges and luckily one was not worn off and could still read the name