Hi, new to the forum and the world of LF photography and looking to build my starter kit.

I have the opportunity to purchase a Schneider Symmar S 150 f5.6, only the seller is telling me there is a small amount of oil on the aperture blades. Is this something I should be concerned about? I've read about the possibility of sticky shutters but I'm told that shutter speeds are "fine" but not electronically tested

Any advice gratefully received

thanks