Serial Number is on the Top of the Back Cover just above the Push button
(https://oldreelcollectors.com/gallery/2-010824165009-2364486.jpeg)
Let us know what Number you Got ????
I have # 800 as the lowest
Here is one Torn Down .
It has 3 Bearings if you count the A/R in the center .
(https://oldreelcollectors.com/gallery/2-010824165032-23661276.jpeg)
(https://oldreelcollectors.com/gallery/2-010824164954-2362200.jpeg)
You might Say ,Why would you tear one down like that ,well an older man than me That Jumped in a Cactus Patch Buck Naked
Said when asked Why
IT JUST LOOKED LIKE THE THING TO DO