A lot of these lamps had dates on the bottoms of them. This one looks 1970's to early 1980's. Like I mentioned some had dates and names on the bottom of them. The bottom part usually had a lamp in it also and had a trilight switch since both lights could be on or just the top or bottom. The bottom parts had a wire mesh diffuser for the bulb.
Re: Hedco Inc Lamp
A lot of these lamps had dates on the bottoms of them. This one looks 1970's to early 1980's. Like I mentioned some had dates and names on the bottom of them. The bottom part usually had a lamp in it also and had a trilight switch since both lights could be on or just the top or bottom. The bottom parts had a wire mesh diffuser for the bulb.