I removed the front cell from a 127mm Kodak Anastigmat Special (the 1944 military ektar) for cleaning, while the shutter happened to be open. The rear projected a very decent looking image of the room ceiling light fixture onto my work desk. What's the deal with that? Is a Tessar a cemented anastigmat pair in the rear? The front didn't project anything but light so it's obviously not a corrected dialyte pair?

Thanks,
Dan