Nachi NOS Bearing 6203ZEC3 sku 8133

Brand new in factory packing.  Also included is a second new bearing marked  6301Z 
Description from AI

A 6203ZEC3 bearing is a single-row, deep-groove ball bearing with a

40𝑚𝑚 outer diameter, and a 12mm

width. The "Z" indicates a single metal shield, the "E" is often part of a manufacturer's specific code (sometimes implying a single shield or other feature), and the "C3" denotes a larger-than-standard internal radial clearance. This design is versatile and suitable for applications with radial and axial loads, such as those found in electric fans, washing machines, and general factory automation. 

https://bearingfinder.ntnamericas.com/item/deep-groove-ball-bearings/single-row-radial-ball-bearings/6203zc3#:~:text=Item%20%23%206203ZC3%2C%20Single%20Row%20Radial%20Ball,Shielded%20On%20NTN%20Bearing%20Corp.%20of%20America.