identify a signature on a crackle glazed pitcher with horse scene.

[yards2022]

Three letters stacked SXR in orange color font under the pitcher handle. 

[downunder-61]

Try asking here

https://community.ebay.com/t5/Collectibles-Art/bd-p/29

[mn467462]

Bring it to an authenticator or appraiser. People will tell you anything for free. I think it's signed by Jesus Christ himself.