: You hit me. Lee is right. It was March 19, 1983, in Kalamazoo Michigan and was the 275th guitar stamped that day. The number you give is 88083275. In the numbering system Gibson used at that time, the pattern is read: YDDDYPPP, the two Y’s are the year of manufacture, like Lee said 1983. The three P’s are the production plant designation and order in which it was stamped, numbers from 001-499 were made in Kalamazoo, MI. and numbers from 500-999 were made in Nashville, TN. The three D’s are the day of the year starting at 1 and going up to 365 (366 if it’s a leap year) and on up higher still. It reached the 900’s in 1977. But 1983 was not a leap year, 1984 was. The Kalamazoo plant closed in 1984 and all production was moved to the Nashville plant, which opened in 1974 and made mostly electrics. When the Bozeman, Montana plant started acoustic production in 1989, the numbers represented by the three P’s were reorganized. Bozeman began using 001 and up, in 1990 Nashville began using 300 and up. I know, you’re thinking, "How does 808 represent March 19th?" If you go past December 31st, which is 365, then the second January 1st is 366 and the next day, Jan. 2nd, would be 367, etc. and keep going up until Dec. 31st again, which is 730. The third January 1st is 731. January has 31 days in it, so 730 + 31 = 761. February, 1983, had 28 days in it, so 761 + 28 = 789. The third Feb. 28th would be 789, which leaves 19. 808 – 789 = 19. If you go up 19 days from Feb. 28th you will be on Mar. 19th. If you can send me back a description with as much detail as possible (how many pickups and frets, color, switches, bridge/tailpiece, what type of fret/finger board, pick guard color, volume/tone controls, etc.) I will see if I can find the model for you. Hope this info helps, Pookster