Don Daredevil Rides Again 1951 is a Republic Movie serial. It makes heavy use of stock footage from Republics previous Zorro serials. The character of Don Daredevil Ken Curtis was created for this serial as the rights to Zorro belonged to Disney by 1951.
Don Daredevil Rides Agains official release date isApril 1951, although this is actually the date the sixth chapter was made available to film exchanges.
Source: Wikipedia