There's not really any public information on it. Basically, it's an OTD 360c clone that was never run at quantity. UTD 360c is an example of an OTD 360c clone that was run at quantity.

Worth noting that they're specifically clones not counterfeits, since they both have different engravings from the original. The UTD errs closer to counterfeit territory though; it keeps the same 360c name and has the same engravings on the top casing and brass bar. Only an extra "UTD" engraving directly differentiates it from the original. The 488 on the other hand has its own top and brass bar engravings.