PMG Gem Uncirculated 66 EPQ, Proof The Bank of Cumberland opened in 1835 and thirty years later became the Cumberland National Bank of Portland. This stunning design includes a center vignette that reflects Maine’s Coat of Arms and a red overall tint and protector panels. Earned PMG’s black star quality status. This note was part of the 1990 ABNCo Archives sale from an uncut $1-$1-$2-$3 proof sheet.