Montreal   Duplex   Cancels

The "1-11" and "13" hammers appear to have been in use from early 1915 until mid 1920.   The earliest date is January 30, 1915 and the latest date is July 3, 1920.   The "12" hammer appears to have been is use for a month or two in 1925.

The "3", "4", "7", and "8" hammers were replaced in early 1917.   It is reasonable to assume that the original hammers were damged in some way.



"1"
"2"

Thick "3"
Thin "3"

Thick "4"
Thin "4"

"5"
"6"

Thick "7"
Thin "7"

Thick "8"
Thin "8"

"9"
"10"

"11"
"12"

"13"