mmars is correct: The SNDB doesn't collect "comments" like would have to be required here. Also, there was a couple articles on this subject in the CPMS Newsletter, so members should consult their archives for further information.
Finally, even if the SNDB did allow for this, the volume of data on the pre-security notes is pitifully small so any conclusions drawn from what is there should be taken with a grain of salt.
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.