DUNLOP FEDERAL AUSTRALIA No 4 GOLF BALL c1940s to 1950s NEW & NEVER USED with NO FAULTS AT ALL. ORIGINAL LABEL & GREASE PROOF PAPER STILL WITH THIS BALL but PAPER IS CRUMPLED. The DATE of c1940s to 50s is only my CONSIDERED OPINION from MANY YEARS in the ANTIQUES TRADE DEALING with MANY COLLECTABLES.