Alas, I do not have Flon's work.
For my almost-identical coin of Feudal France, Lorraine,
|Antoine le Bon (1508-1544), I used de Saulcy, Roberts, and Boudeau. I could only pull down de Saulcy one page at a time, so had focused uniquely on Francois I's predecessor, Antoine le Bon. I've just pulled down the paltry four pages for Francois I (3 txt, 1 plate), and will try to add something useful here.
Fingers crossed...
... and here's what I found: Plate XVII #4. Near match. the obverse legend may have been misread (it's described as being heavily worn).
+ FRANCISCVS + C + D + LOTHO Shield of Lorraine and Bar. / MONETA + FACTA + NAN. Sword point down. 1.8 gm.
Also: Roberts SCMF 9441 references that same coin in de Saulcy (L.17.4 = Illustration Sources on p. 509 = Part 4, Feudal France)