I will accept your humble apology then Henri but no need to see your way out, I still enjoy your posts.
This coin has been certified by ICCS, Canada’s leading grader. You are right in the fact that the date should be showing but only if you cannot tell the date of the coin by some other marker. The 1967 series of coins were a one off style. The dollar had the flying goose on the reverse and you can vaguely see the outline of the back of the goose on the reverse. The other certified PO1 that I mentioned is also the same, no date but you can make out the goose.
The 1936 lowball that I posted is the same situation, no date but you can tell it is a 1936 by the crown, in 1935 the crown did not go to the rim.