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It appears to have eighteen veneer thin layers and has a far better finish that the pics convey. It's beauty, in my eyes, is spoilt somewhat by what appears to be silver felt tip pen writing on the blade. I have no idea of the manufacturer - I assume it must be writing on the blade - 12 inch diameter with a 10 inch pitch I have no idea what the D N stands for though. It was given to me in the last couple of weeks or so - beautifully carved (machined?) and finished I can't tell you much more than it was intended for use on R/C aerobatic aircraft. My friend who gave it to me used to fly R/C aerobatics competitively but told me he was always loathe to use it due to it's high cost .