If Baltimore start their sequence numbers with a 2, then your car would have been the 779th that rolled off the line.
Bear in mind that the UAW called o strike in September of 1969 so full production did not happen until January of 1970.
This may mean that management assembled your car......I'd check all the bolts.ππππ·
My car is F138237 which is the 38,237th to come off the Flint assembly line in April of 1970.