It's an extremely obscure reference, so I doubt it adds value. In any case, as Steve mentions, the preferred date format would be MMDDYYYY. In general, I think outside of $1 birthday notes selling for $10, date serial numbers are not going to bring much of a premium anyway...unless it is 07041776 or 09112001 or something really significant to a large number of collectors. On the other hand, if something really big happens on the 83rd of January in the year 9330...?