In Kultakeskus they call these maker's or 'my own' mark. If this product is found to be plated or ground wrong, it can be returned to the actual maker (= internal control mark).

 

The Kultakeskus responsibility mark was KKo/y from 1918 to 1932. Since 1933 they have used a lion-shaped mark. Due to Kultakeskus acquiring other precious metal manufacturing companies they also use additional responsibility and symbol marks. These can be found Tukes register.

 

 1 = Reino Malin until ~1975, Seppo Ollikka ~1975–1980s

 

KKB
B = Pekka Salmi

 

kkc
C = Konsta Saari

 

kkh
H = Esko Hietamies

 

J = Risto Linberg 1960s

 

kkp
P = Esko Viitamäki

 

kkv
V = Eino Laakso, Ville Laakso

 

v (sideways) = Markku Laulaja ~1978-2008

 

KKw
W = Olavi Lehtinen

 

KKx
X = Pena (Pentti) Niinikoski

 

KKz
Z = Heikki Kajander

  

UNIDENTIFIED

The following marks have also been used:

2, 3, 4, 5, 6, 7, 8, 9, 22
G, I, L, N, O, R, S, U, Y, Ö, Å

 

kk2
2

 

kkn
N

 

kkr
R

 

kku
U