I recently came across a Virginia Colonial $2 issue of First Day of May, 1780 that had an interest related box on the lower left of the face as follows:

Perhaps your readers could enlighten me as to what the s. d. q. means. Thanks

Until 1971, British money was divided up into pounds, shillings and pence.

• One pound was divided into 20 shillings.
• One shilling was divided into 12 pennies.
• One penny was divided into two halfpennies, or four farthings.

There were therefore 240 pennies in a pound.

Common abbreviations

To read the complete article, see:
Manuscripts and Special Collections : Money(https://www.nottingham.ac.uk/manuscriptsandspecialcollections/
researchguidance/weightsandmeasures/money.aspx)

Ron writes: