While I dont know exactly what wattage these are rated for, they would been originally paired with a low wattage combination system (cassette/record player/radio etc). So we both should assume they are rated for 40 Watts max i. If you hook them up to a modern 100 Watt system and crank the volume all the way up you'll almost certainly destroy them.
That said - they sound absolutely lovely (and in some ways superior) and likely have paper-cones, making them light and crisp for vocals etc. They'll sounds stunning for an NPR newscast...
But will not fill up the room with rap or bass. 11.25" W x 5.5" D x 19 T.
See finger point pics for any cosmetic blemishes. Please note one is obviously blonder and more sun-faded than the other one; Less of an issue the further away from one another they are placed in the room.