Hi, photos 1 & 2 - Serial number 1762 stamped into top rear of cabinet and barely readable factory label.
Photos 2& 3 - Serial number 1763 stamped into top rear cabinet and barely readable factory label.
Photos 5 & 9 - Factory labels for both top horn cabinets
Photos 6 & 7 - photos of both K-55-V horns
Photo 8 - Front photo of one of the KHorns
Photos 10,11 &12 - photos of the crossovers
I appreciate everything you are doing to assist me in researching these speakers, thanks!