List of EKI Screw Back makers

[CMSgt]

CODE MAKER

L/10 Deschler &Sohn Munche regular disc
L/11 Wilheim Deumer Ludenscheld regular disc
Unmarked clamshell disc
L/12 C.E. Junker Berlin regular disc
Unmarked two disc
L/13 Paul Meybauer Berlin regular disc
Unmarked disc
Unmarked two disc (one disc is cross type)
L/14 Friedrich Orth Wien regular disc
L/15 Unmarked Otto Schickle Pforzheim two disc
L/16 Steinhauer & Luck Ludenscheld regular disc
Unmarked S&L regular disc
Unmarked S&L two disc
L/18 B. H. Mayer's Kunst-prageanstalt Pforzheim regular disc
L/50 Gebr. Godet & Co. Berlin regular disc (doubled stamped)
L/51 E. Ferd Weidmann Frankfurt/Main Note: did not mark his crosses regular disc
L/52 C.F. Zimmermann Pforzheim regular disc
L/53 Hymenn & Co Ludenscheid regular disc
L/54 Schauerte & Hohfeld Ludenscheid regular disc
Unmarked two disc
L/55 Wachtker & Lang Rudolf Mittwaidea/Sa regular disc Mark without box
Mark with box
L/56 Funcke & Bruninghaus Ludenscheid regular disc mark on disc
L/57 Boerger & Co. Berlin regular disc
L/58 Rudolf Souval Wien regular disc mark on disc
L/59 Alois Rettenmaler Scwablsch-Gmund regular disc with lazy S
Petz & Lorenz two disc

Unmarked F.W. Assmann & Sohn Ludenscheld two disc

Walter & Hentein Gablonz a.d.N. regular disc (some say original others fake)

Sedlatzek Berlin

[Woolgar]

Thanks for this , I still have some way to go

Nick