I just won a chip on eBay shown in the top scan, which looks to be N5075 from the Frontier Club in Reno. I haven't seen a picture of the other side, but the seller says it is stamped "Goulding's $5".

Is this probably a sample or a floor-sweeping? In the seller's picture, the font used for the $25 stamp looks more elongated than the stamp on the chip pictured in the scan that Paul Hegge is showing on his Silver State Treasures site, which is the bottom picture.

Any thoughts? I'll post scans of both sides once I receive the chip.