Jupiter 3 in need of aperture blade

[smaphoto]

Hi,

I have got a Jupiter 3 in need of some work. It only has 12 aperture blades rather than 13 does anyone know where blades can be sourced. Also I am having a problem unscrewing lens module , any tips would be appreciated.

[dberger]

If it's missing a blade but the aperture is otherwise working fine -- i.e., no loose blade floating around, aperture not jammed, aperture opens and closes throughout the range -- don't worry about it. You certainly won't notice a difference in the images, and the effect on through-the-lens metering will be miniscule.

Cheers,

David