Basement 6 Burner Stove

We found this gas range when we moved into our new house.We are the 3rd owners. It was next to the canning room in the cellar. The 2nd owner told us she doesn't know if it works b/c it was there when they moved in. I was interested in fixing it up because it is similar to the stove we cook with upstairs & I love the look of the older stoves. I don't know if it even works or if it would be worth trying to clean & fix. I tried to find information out for parts purposes but cannot find anything on this particular model. It is a 6 burner gas range with robertshaw temp. knob and reads Grand champion. oven is on the right with broiler on the left. It has 2 more drawers under it. We think it to be pre 1960 & I believe it in 40 inches in width. I have attached some pictures. It does need some door handles but is in rather good shape just very dirty, so I hope to learn more about it.