I have some sequential 2006 $20.00 and $50.00 notes and before I cash them in for silver I need to know if they may have a premium over face value. Lot#1 13 x $20.00 /series 2006 / ser#'s IK25350051B-IK5350068B / G-4 LOt#2 7 x $20.00 / series 2006 / ser#s IK25046406B-IK25046412B / F-4 / K11 Lot#3 4x$50.00 / series 2006 / ser#'s ID35251082A-ID3525551085A / D-4 Notes are UNC condition.