[Ron Ramirez]

...and the serial # is 652376 so it's a late version.

Actually, it is still an early version.

Late versions have serial numbers above S/N B22000.

Let's examine that in detail.

When Philco's serial numbers made it to 999999, instead of starting over or adding a seventh digit, the next number became A00000. When they got to A99999 the next number was B00000.

So...according to Philco's documentation...any 70 chassis with a S/N above B22000 was supposed to be a late version. S/Ns below B22000 were early versions.