The $470 chip is the 1st issue Bellagio $25, same as you contributed to the ChipGuide. (Yes, the $470 price seems high, but it's from a legit seller who I know.)

There are others, priced at $199, $250 and $275, all on eBay right now, so the $470 seems an outlier price.

All of the above seem legit house molds. But also be aware that there's a home game set with a lookalike $25 EXCEPT it's a linen smooth mold that only REPLICATES the house mold look, but it's simply printed on the surface. The 2 fig leaves, or whatever they are, are lacking some definition in the home-game chip, but otherwise, pretty close to the real thing, IMO.

For comparison, in the pics below, the $470 chip is 1st and the home-game $25 is 2nd, below. Pretty close to the casual view, unless you're holding both to feel the difference.

I know you're aware of all this -- just showing the comparison.