Opinions please on these 2 bills.
Both $20.00 notes. Any premium? Series 2013 MG10111111C. I know some SN's are collectible. Series 2004A GF92919838. The last note curious to me as I never noticed a letter (A) after the series date. Any info. as to why the letter after the date would be appreciated. I know the SN is common. Thanks in advance.