I agree, Brent. If, in case the "lost prefixes" of BEL thru BEP gets released (which is highly unlikely), you should get them and hold on to them! Better yet, hold on to any current $10 Jenkins/Dodge prefixes (especially BER), as they may be worth a premium in ten or twenty years down the road!
I was at the Scotiabank in St. John's, NL this morning, the teller had crispy tens, but I turned them down because the prefix of FEK, a two-year old prefix, was what she had.
By the way, is the upgraded ten still an issue of 2001 or is it an issue of 2005?