It looks like a Brinkmann to me. If not, it's a clone. I purchased one about 30 years ago and used it successfully until I built one using an old steel lined refrigerator (there are pictures somewhere on this forum).
The Brinkmann used heat beads and had a large water pan in the base, which made for succulent smoked meats. The Christmas turkey and hams that came out of this thing were to die for and one didn't need stainless steel teeth to enjoy the drumstick.
I eventually converted it to gas and my son is still smoking his meat in it.