Hi,
Such prices are H. Weitze prices

I think 1700-1900 would be OK from private to private.
And one more thing: this special liner with small holes at the front are well known for French collectors to be post war...Specially made for vet ceremonies, processions or many other post war official or inofficial meetings. That is explaining too the maker mark EREL

Philippe
You did read/understand that I said "full retail price", correct?
Yes, of course, there is a difference between a "full retail price" and a "collector to collector price" or a "private person to private person price." I did not quote a "private to private price" or a "collector to collector price" here for new member Don M. I should have made that distinction.
As a side note, I believe that a H. Weitze price on this helmet would actually be higher than the "full retail price" that I quoted.

When I gave the retail price quote here, I was thinking more in line with what our friends R. & R. of Age of Kings might ask for such a helmet if they were to offer it for sale, in comparison to the retail prices they ask on their helmets offered for sale.

Certain people can get higher prices than others can, because they're famous, or because of the knowledge they possess, or because of their reputation, or other factors. And some retail dealers choose not to price items as much as H. Weitze does.

I have no problem agreeing that a "private to private" price would be 1700 to 1900 for the helmet.
When I initially posted about this helmet, I did not know if the Erel company existed in the WW1 era or not. I did not research their company history to discover what year the company came into existence.
Here is a quick result of my search on the history of EREL company:
"The Robert Lubstein company was founded in Berlin, Germany, and became a prominent hat manufacturer in the early 20th century. Around 1921, the company began using the acronym
EREL for one of its product lines, while also producing caps under the full "Robert Lubstein" name until 1939. After 1939, all production was consolidated under the EREL brand, with manufacturing moved to a facility at Berlin N.O. 55 Heinrich-Roller Straße 16-18, where it remained throughout World War II."
My question is: Was this "EREL FIBER HELM" the same company as the Robert Lubstein company, better known by its brand name "EREL"?
Maybe our Germany based friends here will have better internet search results than what I am having from here in the U.S.A, I hope that someone can find out about the company history of Robert Lubstein, and when the company actually came into existence, and whether or not they manufactured pickelhaube helmets during WW1, or if that production began in the 1920's or the 1930's. It would be great to learn when this helmet was made.
I understand about the ventilation on the sweatband as generally being thokkught of as being used on helmets from the post-war era used for veteran purposes as you have nicely mentioned here.
I recall the discussion on the Braunschweig helmet of Princess Victoria Louise, found here:
This helmet belonged to Viktoria Luise, Wilhelm II's daughter and Princess of Braunschweig. She donated it to a museum in 1961 (see the original tag). It is probably a post-war model. The "face" (skull) looks more rounded, less emaciated that on earlier examples (compare with Adler's helmet). I have added a picture from Junker's post-war catalogue. Definition is poor but you can guess that the shape of the death head is similar. The Haarbusch has the same provenance.
Bruno

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Best Wishes,
Alan