A phototype adaptation of an untitled “modern alphabet” (UC and lc plus some numerals) by J.M. Bergling shown in his Art Alphabets & Lettering (1914). Shown in PLINC’s Art Nouveau Xenotypes 1895–1905 (1962) as Xenotype 3486 and in the One Line catalog (1971) as Radium. Not to be confused with Radium (Ludwig & Mayer).
David Nalle’s Beaumains (Scriptorium, 2011) is based on the same source.