This is a vintage Kodak Brownie Darkroom Lamp Kit Model B featuring a filter for paper printing and for film printing. The kit includes a working 7 watt lamp. In the event the lamp burns out, it takes a common screw type mini candelabra that you should be able to find in most hardware stores.
This screws into a conventional American or Canadian light socket. We tested the series O yellow filter for paper printing at the recommended distance (4') and it worked very well (no fogging detected on our paper). Note that the green filter for sheet film processing is likely only useful for extremely slow specialty films (sadly most current production films will not tolerate any safelight).