Strange Taiwan H6er. Serial 0000790.

I've recently picked up what appears to be a Taiwain H6er, but there's some things about it that seem unusual to me. I'd like to try to understand what exactly I have here, so any insight anyone has would be appreciated.

(I apologize in advance for the dirtiness of the console. I just received it this week, and I want to take my time in cleaning this, but I wanted to learn more about it first.)

The serial number is "0000790", which seems strange to me.



I don't know the significance of the "T" in front. Taiwain? Or the "CO10922".


Here are some photos of the unit:






It has some vents in the top front of the console that I haven't noticed before in other VCS consoles I've owned.



The power supply that arrived with it isn't the standard H6 grey power supply, but it feels heavier than I've noticed any of the others I've had before, and it looks a little different.




The console weighs just over 4 lbs 14 oz.



The joysticks that arrived with it seem to be CX-40s. I don't know how to differentiate H6er paddles from standard ones.

I haven't opened it yet, so I don't know what's inside. I will probably open and remove the case when I clean it, and will look at the RF modulator then to try to determine the manufacture date.

I'm guessing that this is either a very early model, or late model (before production shifted to L6ers), Taiwain H6er.

If anyone recognizes this, or understands the meaning of the serial number, I would appreciate it if you can share your knowledge. (I don't consider myself knowledgeable on hardware in general.)

Thanks