Here is the PG stamp on the master cylinder on my 71 Corvette.
Manual brake cars use a DC master - 67-early 72 is the same master cylinder.
Casting doesn't change after that however they are stamped on the first boss with the assembly stamp and date.
The machining or assembly date is on the first boss with the line coming out.
If there is not a jullian date (formatted: LAST digit of year followed by the day 001 -365) it is from a 67-69
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~JAG~
NCRS#65120
68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car
#21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built.
71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist.
NUMEROUS Lemans blue Camaros,
Monza Red and Daytona Yellow Corvettes
& a Chevelle or two...
Survivors, restored cars, & other photos
https://picasaweb.google.com/lh/myphotos
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