1798 Draped Bust Silver Dollar. Heraldic Eagle. BB-96, B-6. Rarity-3. Knob 9, 10 Arrows, 5 Vertical Lines. EF Details--Cleaned (PCGS).A more affordable EF to represent the Knob 9, 10 Arrows Guide Book</em> variety of the 1798 Heraldic Eagle dollar. A median rarity among die marriages of this issue, Q. David Bowers (2013) provides an estimate of 500 to 800 coins extant in all grades for the BB-96 pairing. BB Die State IV.PCGS# 6873. NGC ID: 24X6.From the Collection of Silas Stanley Roberts, 1888-1966.