I have had for years an old coffin plane marked "Marten Doscher, New York". The iron is "W Butcher, Cast Steel, Sheffield". Is this a known plane maker? I am not familiar with wooden planes, and this has been just a decor item up to now. It seems to be in very good condition and I was wondering if it might be worth cleaning up and using. All of my experience has been with power tools and a collection of Stanley planes. Any ideas of it's age? Thanks, folks.