Speed graphic 1948 graflak or graflok back

[LisaC32]

I am trying to determine value of a Speed Graphic by Graflex. Through the serial # I have determined it is 1948 Has a KALART synchronized range finder. Tesler lens 4.7 127 mm. have been unable to open back to determine if back is graflex or graflok. From my limited knowledge I believe this is a pacer. Any and all advice appreciated.

 

[NER]

The following may be helpful:

Graflex Price Guide: estimate a camera value
James's Camera Collection: Graflex Speed Graphic


N. Riley
http://normanrileyphotography.com

 

[IanG]

A Graflex back is next to useless, they were special order so less common, the US Navy preferred them. See here

It sounds like it's a Graphic/Spring back if you can't open it and the Graflok back came out 11949. Have a look here. Also is the camera 5x4 or Quarter plate.

Ian