Hello
Your knob is a Danish product. Maker »C (hammer) C« sorry I couldn't tell you, because I haven't a detailed Danish Maker's Marks register.
»D (hammer) A« = »Dansk Arbeide«, a Danish Products (of
all kind of production) sales promotion organization.
In between you've to read a little bit - but it's very informative.
Look here:
D (hammer) A, in a shield = Dansk Arbejde ->
http://www.925-1000.com/forum/viewtopic.php?t=12551" onclick="window.open(this.href);return false;
http://www.925-1000.com/denmarkC.html" onclick="window.open(this.href);return false;
http://www.925-1000.com/forum/viewtopic ... ight=dansk" onclick="window.open(this.href);return false;
http://www.925-1000.com/forum/viewtopic ... ht=arbejde" onclick="window.open(this.href);return false;
http://www.cohrsilver.dk/cohr/index.htm
Kind regards silverport