l953. Not sure why anybody would type an l instead of a 1 there…All of the other 1s on the doc look like lower-case ls. Someone on another thread mentioned that back in the day they would use the letter o for zero and a lower case l for 1.
As soon as I saw the Aussie BC I noticed a difference in the 1s. Again, not sure if it’s relevant. I have used old typewriters in the past but not enough to make an assessment.
“Hm, the letter in 1953 looks like a small L, like l953. Not sure why anybody would type an l instead of a 1 there… “
An earlier post covered this - a member here who worked with typewriters for 30 years said that early typewriters didn’t have an 1 or 0, so they were typed l and O.
Maybe this was one of the newer typewriters and the typist reverted to the older typing system for a moment.