Scoring Kenwood LS-990, one of the best vintage speakers

Before I went scoring these kenwood Ls -990 I had never heard them but because I read very positive things about them , I had the idea that these could sound very good. Now I heard them, I know why you hardly see them om the second hand market, they are simply to good to let go. Very rare speakers

Specs:
Manufacturer: Kenwood
Model: LS-990
Type: Loudspeaker
Years of manufacture: 1977 - 1979
Made in: Japan
Color: Anthracite Brown, Back Panel Solid Douglas Spruce
Dimensions: 376 x 676 x 328 mm (WxHxD)
Weight: 27 kg
Original price approx.: 1'198 DM per piece

Type: 3-way/3 speakers / bass reflex
Chassis: Alnico Magnets
Low frequency: 33cm cone Midrange: 12cm cone Tweeter: pressure chamber system with horn radiator

Power handling (nominal/music): 65W / 100W max
Efficiency: 93dB/W/m
Frequency response: 32-20000Hz
Crossover: 1300/6500Hz
Impedance: 8Ohm