I have a 1957 Martin 018. My husband bought it for me that year. I play it for my own pleasure. I'm not a professional. I love that guitar and so does everyone who's ever tried it. It has easy action and is small enough for me, yet it has great sound. I also have a d28 that I bought at the martin factory in Nazareth,Pa. in 1985. It is a research and developement guitar. I was told they only made two like it. It has a black graphite front. Since they decided not to make any more of that kind they didn't even finish it. The wood is sealed but not finished. It does not have bindings. It's nothing to look at but it has a great sound. It's large and I can only play it while standing as I am short. It is much heavier than the 018. I wouldn't part with either of my Martins.