Yeah technically it is (came as a set framed and given to captains), but most collectors would much rather the numbered with redemption. IMO that card is worth $250 max.
They have been listed on ebay before ... there was a whole set, I don't remember how much the Johns one sold for though. I do remember a couple (Kimmorley was one) sticking around for ages on buy it now, though.
Yeah, wouldn't really bother with it myself, not being an official release, but it might be worth grabbing if you were after the card, but couldn't afford a numbered one.
for anyone still wondering the unnumbered ones were given to the players themselves - i know because i got the craig gower one given to me by him which i since sold to brplat