Here's a look at a scan of two different H&C half dollars from the Showboat. The one on the left is the earlier one from the 70's; it appears a little redder than the other, but that may just be from table play. It has what TCR calls "fine print" on the inlay.

The one on the right is maybe 5-10 years later and the artwork is the same but "grew" a little when they photo reproduced it. It's called "bold print" in TCR.

If you collect inlaid fractionals, here is your chance for two from Las Vegas. The later one is in a little better condition but both stand on edge.

Each is $30-40 in TCR. You can have the pair for $35 and I'll pay postage in the USA.