Serial Number Interpretation

[tchostler]

I have a Colt 1911 that was customized by Clark with a serial number that ends in G70. What does that mean?
tc

[tenx]

Sounds like a Government Model Series 70


Colt used a 70G or 70B prefix or a G70 or B70 suffix on the serial number to indicate a blue Government Model Series 70.

[paul45]

That actually denotes production between '76 and '80.

[tchostler]

Inside the slide there is a stamp 11 79. I would assume this is the date the pistol was modified and not a build date.
tc