jrjrr wrote:.... What is the restriction plate your are talking about. ....
Hi Jim and welcome to the forum. Check out this thread: vigilant coal stove model 2310?
There's a picture posted on the sixth entry of the plate and a description of all the plates and their locations. To check for this plate, the fire should be out and stove empty. It's on the left side back of the stove under/behind the grates.
Since your stove, probably a model 2310, was given to you it was most likely used to burn coal already --- guessing here? If so, the plate might be out. If you're getting a good hot fire, it most likely is out. The Mfg. of the stove included a waring plate that was to be placed on the top of the ash pan door stating to burn anthracite only.