------
Thanks very much for this larger format image!
Hubs look to be New Star.
1971 was final year the Atom 440 had this alloy dustcap with the slot.
This generation of Prestige shift lever launched 1970-71 so that brackets date closely.
Arrestors present as mixed kit:
MAFAC levers with blue hood on drive side and black hood on NDS. Is blue hood a replacement?
CLB Racer front caliper and Weinmann 750 rear caliper.
CLB front hanger.
Lever covers/sleeves appear Rampinelli (REG).
This combination of brake bits offers the rider no quick release.
-----