Looks like it anyway!
Jonathan, it certainly looks like New Old Stock; that's a great find.
Some years ago I saw a yellow U5010 on a car boot sale for about £10 and dismissed it at the time, being not all that old/collectable in my book. However, since then I've only seen the very odd one.
More recently there was a guy on Ebay selling a similar yellow model, which looked like it had been imported from Europe. IIRC, it had a Buy It Now price of £200. I didn't feel like running to that but it was nice though.
Stephen