Good to have you back, Endular.
In essence, just replace the word/phrase "Gold/Gold Piece" with "True."
Contrary to the initial writeup, I believe the plural of "True" should still be "True," as it's short for "True One-Ounce Pieces of Gold", rather than "Trues" or, worse yet, "Truths."
Forty true, abbreviated Tr40.
Though abbreviation conventions vary.