An electric drill-mounted jig saw from ARCO. Originally out of New York City, by the 1970's the company had relocated to Englewood, New Jersey. The tool is actually quite well made. Although I have no intention of using the tool, I removed the front plate to lubricate it and was impressed by the precision of the parts within. I also love the way they produced the serrated letters in the word "Jig" on the name plate.