Merkel come in the middle 30 with a another cheap modell, cheaper than the modell 400, modell 100.
They had also an issu with not the double greener lock, known as Kerstenlock, it had a look alike the Berettasystem today.
The modells were:
Modell 100, 101, 400, 401, 200, 201, 202, 204, 203, 300, 301, 302, 303, 304. With E if the gun had an ejektor.
The 300, 301, 302 has an anson & deeley lock.
101, 201, 301 had better engraving
202, 302 had false sideplates
204, 203, 303, 304 had sidelocks.
204 was a simpler modell than the 203.
300-304 had quadruple closing of barrels.
304 was the top of the range.
400 serie could also be delivered as combination gun shotgun/rifle, with modell nummer 410, 411 with or without ejektor E.
200, 300 modells could be delivered both as combinations guns and as double rifle. 210, 211, 212, 214, 213, 310, 311, 312, 313, 314, with or without ejektor E.
As double rifle, modell number 220, 221, 222, 223, 320, 321, 322, 323, 324 with or without ejektor E.
Or as a system with insert barrels.