Portable Dayton 16V987B Step Up / Step Down Transformer Voltage Converter 1500W 
50/60HZ Frequency
VA/Power Rating: 1.5kVA
Single Phase
Converts 110V AC to 220V AC & 220V AC to 110V AC 
Enclosure Material: Black Vented Metal
4 Outlets - 1 is a universal / European
Includes: On/Off Switch With Power Indicator Light, Insulated Power Cord, 15A Fuse, (2) Outlets
Also included is a 250v European universal travel adapter so you can use the extra 250V outlet in the United States - this doesn't come with a new unit.
Height 6.5 in, Depth 9.25 in, Width 7.5 in.
Weight appx. 12 pounds.

Excellent condition: looks and works great.

This B version/model is hard to find. I believe it has something additional over the regular model (16V987), but I can't find any information about what the difference is other than it's a little smaller and lighter.