Jeff, the #6 and #14 (unissued) were designed and printed by De La Rue in London Eng.
Here is the London printed #6 on the left and two #7 (one on translucent, British paper and local paper) both printed locally by Archer & Daley of Richmond Va.

The unissued #14 (sadly not a very good copy)

The altered plates mentioned on other threads were also created there.
Here's an emerald green copy of the 2˘ Calhoune printed by August Dietz in the 1920s. Just missed out on a nice block of 4 of these on
ebay yesterday.

Couldn't tell you about the currency.