Shimano 600 6400 road bike groups in good working order

Details:
Crankset - Shimano 600 FC 6400 175mm crank arms, 53 and 42 tooth chainrings
Brakes - Shimano 600 BR 6403 with brake pads
Rear Derailleur - Shimano 600 RD 6401 short cage
Front Derailleur - Shimano 600 FD 6401, bottom cable pull, 31.8 mm clamp
Shifters - Shimano ST R500 not Shimano 600 but newer and work great, 2 x 8 speed shifter brake combos