Skil Saw

One of the fellas at work brought in a strange piece. It is a Skil Saw Model J. The largest blade you could put on this saw would be 5". The shoe is about 2 1/2" wide. There is no blade guard. It does not have a trigger switch, it is an on-off ball ended toggle. Yes, this thing is dangerous by today's standards. It is a full barrel saw. The castings do not match a Model E or a 77, but the diameter and length are within fractions.
Does anyone have any information about this critter? I have sent off to Skil, but have not gotten any response.
Keep the whole world singing . . . .
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