original (i think) (perchance) can be found in "le filet brode n°II" by A. Crespel, full of vintage/antique file crochet, crossstitch or, in this case, also alpha designs!!! you can find it as a. crespel le filet brode n. II in the antiquepatternlibrary dot org, the digitalised version of this leur de lis can be found on page 20