I'll be very grateful for any clear insights about the year of this recently acquired Grand Record. I'm placing it between 1974-77 but would love to narrow that down.

The bike is known to have belonged to a collector but came to me with no details about it's history. It appears to retain many original parts but also some others that together don't match any catalogs I've found. Appears to be original paint. It has unusual road/race gearing (52/45 -- 14-21) with period correct components. Can't help wondering if it might be a bike that was caught up in the component supply shortages of the early seventies and assembled a bit off-catalog. (Ignore the modern saddle and pedals)

For dating note the riveted round head tube badge (for the GR... 1973-??), lack of brased on cable guides (pre-77...?), Campy rear drop-outs and remnants of a Reynolds 531 decal on the seat tube but not on the fork.

Below are the frame and hub numbers and then full component details.
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NUMBERS

Bottom Bracket: 53 2V
Drop-outs
RFront: 37301
LFront: A26
LRear: Campagnolo
RRear: 82216 Campagnolo
Maillard Normany hubs:
front: M 07 77
rear: M 09 77
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COMPONENTS

FRAME:
C-T: 58cm (23")
C-C: 58cm (23")
Reynolds 531 decal (deteriorated) on seat tube
Elaborate (Nervex?) lugs
Campagnolo rear dropouts

HEADSET:
StrongLight Competition

BRAKESET:
Weinmann 500 side-pull, Weinmann levers

SHIFT LEVERS:
Campagnolo downtube

FRONT MECH:
SunTour Compe V "QH 4532"

REAR MECH:
SunTour VT Luxe Quick Cage

CHAINSET & CRANKS:
StrongLight 93 Super Competition
52-45 "170 9/16 20"

PEDALS:
Atom 600

FREEWHEEL:
Maeda Pro-Compe SK 8.8.8
5-speed 21-19-17-15-14

HANDLEBAR:
Kusuki WIN

HUBS:
barrels stamped "Normandy M 07 77"

RIMS:
Rigida 13-19 27" 36H
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