Grossmann? Zimmermann? I'm Confused!!

[Rich G]

You EK1 fanatics...

Today saw the arrival of what I thought from the pics was an unmarked Zimmermann. However, when it arrived it didn't match my unmarked Zimmermann so I though it migh be a Grossmann.

But when I searched here for Grossman EK1's, I now think what I thought was an zimmermann might actually be a Grossmann and the new one a zimmermann. Yes, I'm confused. One thread mentions curved inner corners as being Grossmann but none of these seem curved to me. The '3' in the dates are different, the ribbing is thicker on the one on the right and the actual size is slightly larger even though it is convex.

So, I thought, if you guys are bored and want to help out... take a look. Which is which?

3 pics to follow:

[Rich G]

front, new one to right and what I had put down as a Zimmermann to the left

[Rich G]

Backs. Incredibly similar.

[Rich G]

closer pic of the dates

[mads]

The left one is more likely to be a Grossman and the right one a godet or zimmerman

Mads

[Thomas H]

Hi Richard,

The first picture is a Zimmermann. The date and pin match with my flat marked Zimmermann. The 1 in the date is low and the pin is going to the left at the top. Picture 2 & 3, Zimmermann on the right. I like it

Regards,
Thomas

[maxft82]

I am of the same opinion like mads and Thomas.

The first picture EK I of "Zimmermann". At the next pictures the "Zimmermann" always on the right site.

I think comparable pieces can be seen in my pictures. The "Zimmermann" is stamped L/52.

Best regards

Michael

[StefanK.]

the right one is a zimmermann or godet; the left one is a deumer.

großmann did nit produce those ek1.

[Rich G]

the right one is a zimmermann or godet; the left one is a deumer.

großmann did nit produce those ek1.

Stefan,

I have one marked L/11 and it is nothing like the left one. What makes you say it's Deumer?

Rich

[maxft82]

the right one is a zimmermann or godet; the left one is a deumer.

großmann did nit produce those ek1.

This is interesting.

Your statement refers to the two pictures? This of Richard and mine?

I also have an EK I of Deumer. Similarities can be recognized to the EK on the left side on the front.

But the needle system doesn't match of course.

Michael

[Rich G]

Folks

I think I'm sorted now. Thanks for taking pity on my confused mind and confirming my thoughts!

Rich

[StefanK.]

a lot of people here believe that this type of EK1 was produces by grossmann because there are some "11" marked ek1 around with the same characteristics.

in my mind they are nothing more than LDO pieces from deumer without the "L/".

i believe so because on the one hand marked "11" EK2 do not have anything in common with those "11" marked EK1 (look at the frames, core, etc...) and on the other hand we have the proof that deumer DIDuse this specific type of needle. (what about L/11 marked KVK1?)

furthermore the mark "11" on those EK1 look very similar to the 11 in L/11 when you compare them.

this is a very interesting topic and it should be discussed...

[StefanK.]

here is a comparison between a maker marked "11"(left) and a maker marke "L11" (right).

either the core or the frame are absolute identical, look at the date, this pattern of date only appears on Mayer and deumer EK!
another important factor is the curvature of the ribbed part and the round inner corners (also a feature of mayer and deumer ek)

[StefanK.]

here i have ompared a maker marked EK2 "11" and a m.m. EK1 "11"...

what should i say, they have nothing in common

[maxft82]

Hallo Stefan

All this is investigated very well.
I particularly find the observation noteworthy with the needle of the KVK I.Klasse of Deumer.

I hadn't noticed this yet.


I have compared my two pieces in the picture.

Really many agreements can be seen.

Michael