Thank you to Gabe Fajuri for identifying this card.
E. Leslie Briant was a part-time professional magician who billed himself as “Lafayette, The Argentine Wizard”.
He went to South America as a young man, employed in the Bank of London and South America. Living first in Montevideo before moving to Argentina, where he spent the rest of his working life.
Briant began magic professionally in 1920 and developed a full evening show.