<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE= ="Arial" LANG="0">Terry, that is the serial #,they still stamp them on t= he underside of the soundboard,but now also put the serial # on a sticker wi= th a bar code on the lip of the plate  near the high treble tuning pin = field.The K however, is just a production run designation.   Georg= e Fiore    S.Jersey Chapter</FONT></HTML>