New to me Colt M1917

[82Trooper]

Thanks...I am very pleased. So now that I have had a chance to fondle her for a few days..a few more questions about the markings pop up....
The mark above the serial # "I" or "H"?
The "1" below the serial number...does it signify anything?
Does anyone know what the mark is on the rear face of the cylinder? "I" or "H"?
How about on the butt frame.."G" and "O" or "Q"?
But here is the best part...pencil writing on the inside of the grips...what do you guys think of this?
Looks like the serial #, a name "John/Jacob Shea" and "Chateau Thierry".....
Any significance? or a hoax somewhere along her 101 year history?

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