1967 Casting Number - Clock Code

[greekz]

Need some help reading the clock code on my 1967 GT-350.  Thanks in advance.

Greek

[Blackcar]

The circle of numbers is the clock indicating what time of day the part was cast. The single dot above the screw indicates day shift and the numbers 1 3 5 7 9 are the hours of the day. In this case the part was cast at approximately 8 am. The slot in the center of the clock was used by the foundry worker to insert a tool to turn the clock as the work progressed. 

[SFM66H]

"Blackcar" - THANKS for your great explanation of how to decipher a clock code, it's more than I have ever learned before!

But now I'm confused about the dot between the 3 and the 5 - what does that one mean??

Thanks,
Kieth

[greekz]

The circle of numbers is the clock indicating what time of day the part was cast. The single dot above the screw indicates day shift and the numbers 1 3 5 7 9 are the hours of the day. In this case the part was cast at approximately 8 am. The slot in the center of the clock was used by the foundry worker to insert a tool to turn the clock as the work progressed. 

Thank you very much for the explanation.  It seems much clearer now.  I, too, wonder about the other dot outside the clock.

Greek

[JD]

OK, I too am a little not clear, can someone (Blackcar?) identify the 1,2,3 dots and is the 4th not a dot but just a bump in the casting?

[Blackcar]

#1 is day shift #2 is time of day 8am 3 and 4 I don't have an answer.

[greekz]

#1 is day shift #2 is time of day 8am 3 and 4 I don't have an answer.

Thank you for the clarification of the at least 2 of the 4 dots.  Maybe someone else knows about the other 2 to dots.

Greek