The Royal in Henderson was only open 1960-64( without much info on owners dates of operations)
According to Robert Eisenstaedt' site....the zigzag mold was made 1944-53.... so it wouldn't of been used there with those dates..... ***New info....see below***
The story I hear is that a guy named Will P (not 100 % how to spell late name) lived in Modesto, Ca got these chips directly from Frank Vaccaro along with match covers and presented them to other chippers as Modesto. Then some chippers that got these chips decided they should be from Henderson. The only coincidence is ...both $.25 chips seem to be brown.

The earliest listing for the Royal Cafe I saw was 1938. Frank "B" Vaccaro (father) ran it with a guy named Cadrett.
In 1950....Frank "B" owns it and Frank"E" is listed as manager.

*** if anyone is still reading this..... I believe the Zigzag mold was made into the 60's.
Norman S. Noll President/ D.S.Backer Vice Pres.
Noll moved to Palms Springs about 1957 (still listed as President)
Noll moved to Reno about 1959. (Still listed as President of Noll & Co Club Supply)
1964- Noll listed "Gaming Devices"