Hi, The date code on the back is M8 and unfortunately for the other information the watch is at the pawn shop presently so I will get that ASAP. My dad gave me this watch before he passed. His mother prospected a bunch of gold nuggets in Alaska and made several pieces of family jewelry with them. This watch was given to him with a band covered in gold nuggets with a diamond shape pieces of Alaskan Jade on each side. She also made a women's watch that has gone to other family members and several necklaces. I am not sure where she got the watch face. I am planning on keeping the watch band for my 10 year old daughter, but I am a single mom and need a car, so I am eventually going to sell this watch face with a new band for that. My dad wore it often and it always kept perfect time, and he told me to always take it to the same jeweler for battery replacement. (Roper's Jewelry Auburn, CA). I listed the watch on ebay about a years ago, so I was hoping to find my ebay ad to get the other information that is on the back of the watch but I have never had it opened up and will do that as soon as it is in my possession. Thanks!