Help identify a faucet cartridge

[bigfeetlmh]

Hi,

Can anyone please help me identify the brand and item number of this bathroom sink faucet cartridge? Tried all the local plumber stores with no luck. The picture of the faucets are attached. Thank you very much.

 

[ExtraMilePlumbing]

I would put my money on American standart

 

[ExtraMilePlumbing]

And when the search of a stem takes more then a day,that is when I would just replace the whole unit