That's them!
Ok so to recap. They're Model H 1963 or 4, Maple finish, Unknown what the '25' stands for- maybe grill? Designated as 12" with '-12' even though 8" was no longer available, EV SP12B cast basket woofer, Atlas Mid (V), EV K77?
Still dont know about the crossover marked Type 4...
Would you say the grill is what Klipsch refers to as Cane?
Regarding the serial numbers... as there are only 2 digits after the date code, is it logical to assume the digit before the date code is the lot of 100 rather than 1000. ie 7B03 is the 703rd speaker produced in that year?