Not at all, since for DC-24a, the check letter was a PREFIX in front of the sheet number, so C012345 (or whatever number is on that note) is a perfectly good serial number.
Logged
BWJM, F.O.N.A.
Life Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.