by 58limited » Sat May 09, 2015 9:34 am
Welcome to the forum, very nice project you have there.
That is an original optional mirror, fairly rare. Your restoration will be correct if you keep it. They were generally sold in pairs, one for each fender. My dealer parts book lists them thusly:
10.185 Mirror - Rear View - Outside (Bolt on Type)
981839 Qty. 2 (Non-Glare) Round - Hooded
The more common mirrors that mount to the door are part number 981823 (left) and 981824(right).
1958 Buick Limited Riviera Coupe Model 755
Other cars:
1953 Chevrolet 3100 Pickup
1957 Pontiac Transcontinental Safari
1968 Ford Galaxie 500 HT
1977 Lincoln Continental Convertible