Thank you everyone, I can't wait to get started on restoring this beautiful DC-6B model. The model is made of wood and dates from around 1946. I am not 100% sure of the manufacturer but it does have a number stamped on the bottom like you would see on a DFM. The cool part is I have several copies of United PR
photos that show this model. A very similar model can be seen in the background of this movie I found on youtube YouTube - United DC-6-"Honolulu & SFO"-1948-Part l/lll
The decals were custom made for me by a decal manufacturer as a one off set. These decals are very pricey (several hundred dollars), but they were copied directly from the remnants of the model and are high quality. PM me for info if you are seriously interested.
I have several other large factory models that I am currently restoring in various stages of completion. My favorite models are around 1/50th-1/24th scale, I especially like cut-aways.