Leaky bathroom faucet without ID

Hello: Attached are pictures of one of the faucets in our master bath. These pictures also have been uploaded into general community photos. There are no markings or logos identifying the brand name or manufacturer. I have been unable to remove the faucet handles to repair a leak. There are no visible screws anywhere on the faucet, nor other obvious means of removing the handle. Other faucet in master bath is the same, no markings, etc. Can you help with this? Any advice you can provide with respect to identification and/or leak repair would be appreciated. Our home is in Sarver, Pennsylvania, and was built around 1969. Thanks,
Charles

Greetings cmcwittig welcome to the Forum.

I'm thinking Moen, but I could be wrong about that.
This no doubt is a three piece assembly, and you may have to remove the Handle Sets from the Sink, to access the disassembly.

You tried surfing some of the popular Manufacturer's websites, where you can ID them, and see if they may have a parts breakdown for them?

Have a good Day !
S.W.

Thanks for responding. You are right, it is a Moen 4560, and I am duly impressed. Unfortunately, that knowledge has not helped me remove the handles. The threading may be stripped. According to the install manual, the main body of the handle should move independently of the bottom ring, but it doesn't.

Charles,

Don't hold me to this too closely, I'm having a Grey Hair Day today !

But, seems if I remember correctly, the sleeve/body right below the handle, can be unscrewed, and you drop the Valve Assembly out the bottom of the sink.

Again, it's been one of those days! ::

Have a good Day !
S.W.

PS: let me go into that better.
Reach under the sink with a pair of Channelocks, hold the Body, and if you have a Strap Wrench, unscrew the fat part of the valve just below the handle. That may be a little long reach, get some help.

Charles,

For the past TWO days, I have been trying to get a simple Link entered here on the Forum, to a Breakdown Diagram of your Faucet. It would have shown you how to get it apart.

I don't know what's wrong, but the system will NOT let me enter it. I hope you're progressing with a fix to your problem, I just don't know how to resolve this.

Have a good Day !
S.W.