Factory Original NOS New Old Stock lock set 
everything pictured is NOS - Not reproduction!
Original 1966 locks were manufactured by Briggs and Stratton for GM
All three locks have the factory key code stamped on the locks
The pair of keys have the key code in the factory knock out 

This is how the GM cars left the factory. Either dealers or the customer could knock out
the key code and save in case keys were lost

This set is for that special concourse or factory original car

Reproduction lock sets are not the same - these are NOS