I have a Sigma DR 45 with the Made in Japan stamp in back bracing that has the Sigma logo in MOP on the headstock. Interesting story about how I ended up with it. I bought an american strat from Guitar Center 4 months ago and about 2 weeks after I purchased the strat I was back in Guitar Center to buy some acoustic strings. Every time I am in the store I go to the acoustic room and play some of the guitars. I looked up on the wall that they use to hang their used guitars on and noticed at first what I thought was a Martin D45 from a distance with seeing the abalone inlay on the fingerboard. It also had abalone purfling on every edge of the body back and front. I saw the sigma logo and pulled it down to see what it sounded like. At the time I knew all about the sigma history with reading it on Wikipedia back when I bought a sigma dm4 from a pawn shop. The strange thing is the Guitar Center had the guitar labeled as the model being R200. Price was $499. The guitar sounded outstanding and very similar to my Gibson songwriter and sounded as good, IMO, as my Gibson J45. So, I handed the guitar to one of the guys in there that has sold me several in the past and asked him to hold on to it and I would be back in an hour. I went home and got the strat and traded it in on that sigma. They have a policy with new guitars that you have 60 days to return for a refund if you are not happy. Anyway, I really like the sound and seems well built. I can't tell if the back and sides are solid rosewood or not, but I know the top is solid spruce from the grain pattern in the soundhole. It only has a few light scratches and would be flawless except the white binding looks yellowed from the aging nitro finish. The Sigma logo is a MOP that looks golden when it reflects light. Gorgeous instrument that was obviously taken very good care of and prob lived in the case most all of it's life. I would imagine someone prob inherited the guitar and traded it in on a new whatever. The guy that sold it to me said they gave the guy $400 credit for the sigma and so only made $100 when they sold it to me. I still do not understand why they had it labeled as R200 and not a DR45. The stamp is not easy to see and when I was in the Guitar Center I had trouble seeing it and had to use my cell phone as a flash light to see the DR-45. I assume they couldn't really see it very well and didn't bother getting a light to look closer. Sorry for the long post.