One of the early Japanese models so very high quality build and top tier woods. Action is nice and very easy to play. The neck looks to have been reset and a quality job. The neck joint is tight and solid. The action can afford to be lifted or the truss rod adjusted.
There is some buzzing here and there. Perhaps due to the time of year. It may correct itself with more humidity. There is a lacquer mark on the heal but the heal is very solid, neck is straight. I've had this guitar for many years and it continues to play easily and sound tremendous.
There's a bit of hazing in the lacquer on the back as seen in the photos. There is also some lacquer checking on the back that doesn't show up in the photos.This is normal for a guitar this old. Starting to get some patina. Please see the video for a sound check recorded on my iphone6 (piece of crap). The item "1979 Sigma DM18 Guitar with Blue Martin Case Solid Spruce Top MIJ Made in Japan" is in sale since Sunday, March 7, 2021. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Acoustic Guitars". The seller is "skylinechiliblues" and is located in West Chester, Ohio. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.