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courtesy Alex Hanna

Koh-I-Noor Versatil 5612

subtitle

L. & C. Hardtmuth, Inc., Bloomsbury, New Jersey, U.S.A.

lead diameter
mechanism
composition
variations
production date
origin
2 mm
pushbutton spring clutch
all metal
none known
(1950) to 1954
U.S.A.
   
see also Architectural Record, April 1954, Koh-I-Noor ad
Koh-I-Noor 5612 (ribbed grip)

Koh-I-Noor 5612

(ribbed grip)

Koh-I-Noor Rapidograph Inc., Bloomsbury, New Jersey, USA

lead diameter
mechanism
composition
variations
production date
origin
2 mm
pushbutton spring clutch
plastic barrel, metal clutch
pushbutton color: black, blue, brown, green, red, white
(1970s) to 1992
Italy
   
see also Koh-I-Noor Rapidograph catalog, 1980, p 30
Koh-I-Noor Rapidograph catalog, 1985, p B-2
Koh-I-Noor 5613 (old style)

Koh-I-Noor 5612 “Educator”
anonymous donation

Koh-I-Noor 5612 “Educator”

Koh-I-Noor Rapidograph Inc., Bloomsbury, New Jersey, USA

lead diameter
mechanism
composition
variations
production date
origin
2 mm
pushbutton spring clutch
plastic barrel, metal clutch
pushbutton color: black, blue, brown, green, red, white
(1980s)
Italy
   
Koh-I-Noor 5612 (fluted grip, Italy)

Koh-I-Noor 5612 (fluted grip, Italy)

Koh-I-Noor 5612

(fluted grip, Italy)

Koh-I-Noor Rapidograph Inc., Bloomsbury, New Jersey, USA

lead diameter
mechanism
composition
variations
production date
origin
2 mm
pushbutton spring clutch
plastic barrel, metal clutch
pushbutton color: black, blue, brown, green, red, white
1992 to (1996)
Italy
   
special features lead pointer in removable pushbutton
Koh-I-Noor 5612 (fluted grip, China)

Koh-I-Noor 5612C

(fluted grip, China)

Koh-I-Noor Rapidograph Inc., Bloomsbury, New Jersey, USA

lead diameter
mechanism
composition
variations
production date
origin
2 mm
clutch
materials
none
(1996) to (2000)
China
   
Unlike the Italian made version above, this Chinese example does not have a lead pointer in the pushbutton.