Hello, I have a acoustic cutaway Sigma guitar made by Martin. It says it was made in Korea for Martin & Co (Stamped on the inside). I'm assuming somewhere after 1984. I was wondering what info you could give me on this guitar. Year it was made and if it is a rare guitar or vintage? Can anyone send me perhaps a link or pictures of an old catalogue (pdf) file or something with pictures and info? Looking through the sound hole on the neck block there is a number stamped. Looks like 803134. The first #8 is hard to tell if it is an 8 or maybe a 3. Looks more like an 8. There is another number stamped when I look directly straight down into the sound hole (NOT on neck block). This number is 249332 and there is also(separately)DR-3C. I can't find anything on a DR-3C on the internet or in any books. I thought maybe it was DR-30 and not DR-3C but after taking a realy good look with a flashlight it IS DR-3C.(very odd). Unless it is a perfect half print of the number 0 but sure doesn't look like it. This thing sounds amazing. Any info would be greatly appreciated. Thanks