National Yo-Yo made two Pro Tournament models in the 60s through to about 1978. Both were made out of wood and had the exact same body shape. They were made by Elverson of Sweden. What differed between the two versions were slightly different gold leaf stamps.
Version 2 (this exhibit) says, from top to bottom:
"Original Genuine"
"Pro"
(registered trademark symbol)
"Yo-Yo"
"Top"
"Tournament"
"Spinner"
It's not clear which version came first. However, a product sheet from about 1968 shows a picture of version 1. National yo-yos were almost always sold loose out of a yo-yo display carton.
