Seems to me it bears some resemblance to: FEW003 BKN005 BKN010. I'll make a wild guess: it means 1/8 stratus at 300 ft, 5/8 stratus at 500 ft and 7/8 cumulus at 1000 ft.
Now let's wait for someone more familiar with local METAR peculiarities to confirm if I guessed right.