Minox C and "automatic" shutter speed

What is the longest shutter speed the Minox C will use in "automatic" mode? I think I read somewhere that it's around 7 seconds, but I can't seem to find a definitive answer.

There are 4 distinct main versions (aside from any model marking

variations) of the C model. The earliest has a Complan lens and a

shutter that is rated at a maximum of 7 seconds on auto. The second

version has a Minox lens, also with a 7 second shutter. The third

version has a 10 second shutter and an external trim change. The film

counter window and the shutter button hole lose the little raised

ridge around them and the counter window has rectangular corners, now

matching the BL styling. The final version is the same as the third

except that a red LED replaces the white light bulb as the slow speed

warning signal. It has been my experience that these maximum times

should be taken with a grain of salt, as they tend to vary a bit.