I scaled the black lettering on the reverse of my chips and find that there's about a 10% difference in the width of the "WAGON WHEEL" name... enough to show there was new art made. I looked at 4 of the chips of this style (the ones with the larger dollar sign and with partial window panes) and found only one of the 'large lettering' variety. That is probably the scarcest one, Chuck.

I'd be interested to hear from others who have this chip in their collection. If you measure WAGON WHEEL at the extreme ends of the lettering you get about 16 mm for the small letter variety and 18 mm for the large. I've shown the measurement on the scan that ChuckM has uploaded. Which do you have???