Do you have access to the computer/keyboard?
If yes, take a shot of the label under the keyboard.
With the 3 keys each sides of the spacebar, I wonder if this is the keyboard that came with the computer.
From a quick search for JDR, I suspect they were assembling early IBM clones. Those guys were typically selling at a fairly low margin and the keyboards were the cheapest they can get.
I'd be glad to be wrong... Plz provide more details.