Does it have more than one lens with it? I enjoy using my Agfa Standard in this format. I like to contact print the 120 negs on old azo that expired decades ago. They come out really cool.
Brassai used this camera btw. With this technique for timing long exposures:
Brassai used cigarettes to time long exposures - "Une gauloise pour une certaine lumiere, une boyard s'il faisait plus sombre" (a Boyard is thicker than a Gauloise, thus takes longer to burn) therefore "[t]he cigarette is not a cigarette but a clock." Richard Klein, Cigarettes are Sublime (Durham: Duke University Press, 1993).