On sale date on one known copy seems to be December 30, 1950.
Issue #1 exists in two versions:
The newsstand version, priced at 10cents, cover dated March was distributed in both Canada & USA & is contemporary with Captain Hobby Comics (Export Publishing, 1951 edition) #1 (February 1951)
It carries an advert for Captain Hobby on its back cover & its indicia appears on inside front cover.
The Canada only variant is unpriced, no month on cover & has its indicia on the back cover.
Its is uncertain at this time, which copy appeared first.