I’ve been seeking information on the typeface used in some turn-of-the-century German scientific articles, and the closest match I can find is the typeface appearing in Seeman’s 1926 Handbuch der Schriftarten on p.75, listed as “Antiqua Lg.-Nr. 1342”, attributed to the company/foundry “A.-G. für Schriftgieß. u. M., Offenbach a. M.”
However, I’m not sure what some of these abbreviations stand for — especially necessary since Antiqua is just the generic term for roman-style serif faces. I can recognise Offenbach am Main, Schriftgießerei (= type foundry), and Aktiengesellschaft, but for Lg.-Nr. and u. M. I am unsure (I guess Nr is Nummer and u is und?), and these don’t appear in standard lists of abbreviations — I guess they are more specific to the topic. I hope these may be more transparent to native speakers than they are for me?