I purchased this sleeve of three SPALDING TOP-FLITE #4 golf balls in their original sleeve at an estate sale. They appear to be from the PINE VALLEY GOLF CLUB (# 1 rated in world). They are from the Professional Golf Co. and have ARNOLD PALMER on the sleeve. From the print on the balls, they appear to be vintage. (perhaps, the 1960's) Since I purchased them at an estate sale, I can not guarantee their authenticity, BUT they appear to be genuine. They are unused, in their or...iginal package. If they are what they appear to be........they are truly collectible.....You must judge for yourself. As a note of interest......a single ball like this sold for $49.99 on Ebay