Rare and early Ping Redwood City Mod. II A pat pending centre shaft rectangular shaped brass putter - the front and rear soles are stamped "Ping by Karsten" to the one and "Redwood City California - Pat Pend" to the other - and the raised centre chamfered sole plate stamped Mod II A and with the number 13 to the toe - fitted with the original shaft and the Golf Pride flat face thumb grip.