The 1935 notes were printed "12/on" which means that a single sheet contained 12 notes, presumably either 2x6 or 3x4. Either way, they were numbered in groups of four, each four having the same sheet number but differentiated by check letters A, B, C or D. So a single sheet would have three distinct sheet numbers, each having four check letters, for a total of 12 unique serial numbers. Note that the serial number is composed of both the sheet number and the check letter (and in the case of older issues, the series letter too).
Lower denominations were printed "24/on", and all denominations had their last few sheets needed to complete an order printed "4/on".
More details about this can be found in the Details of the Printing paragraph at the beginning of the 1935 series in your Charlton Government Paper Money catalogue.
Going back to your two example notes, since they have distinct check letters, they are different notes and thus there appears to be no funny business afoot in that regard. I've not looked at the full-size images of either note so I make no comments whatsoever about the conditions of either note.
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BWJM, F.O.N.A.
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