It is not unknown for Lighters from Canada to to be shipped with Bradford stamped inserts, so this can sometimes be a help.
The first stamp used on the base of the lighter bore the legend "PAT. This was used on lighters manufactured until around the end of 1950. There are many examples of "Pat Pend" cases with "Pat 1950" inserts (see below) these lighters would have been made around the time of the changeover at the end of 1950 using stock cases and newer inserts.
I am going to start with the last undated lighter as this is the easiest to date.This lighter was made between 19 and is identifiable by what is known as the "Full Stamp".Whilst being a good guideline, this is by no means infallible.Companies planning an anniversary celebration would start the planning and ordering the souvenirs a lot earlier than the date of the anniversary, for this reason a lighter engraved 1956, may have been produced in 1955.The base has three lines of text and is the only uncoded version to carry the Patent Number 2517191.
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