As you can see from the picture, its box are almost the same as the MAC-101E. So I am not so sure if it’s the stock box. And it’s made in the 36th weeks of 1990, in Taiwan.
This kbd comes with Alps SKCM white Switch and double shot keycaps produced by Tai Hao. I would say it’s in used condition with some mild shiny caps, but still in pretty good shape.
The kbd consists of three parts (the 60% part, number pad part and arrow part), If you want to take any part out, just push the buckle under the kbd then take the part you want out. You can connect each part back to any area of the pcb by Flex Cable as you wish. So the kbd allows users to have up to 6 different layouts.