As for the PC-2 Tandy’s choice was to make the difference : RS-232C but but parallel interface.
This was a manner to reduce price.

I don’t know anything about the original packaging but all accessories are same.
The manual is smaller, the keyboard mask adapted to the geometric keyboard.

And the is no difference when connected to the black printer :

Here is the manual :

Next time i will show you the hardware of booth interface versions.
Stay tuned…