Yeah that' a 79. serial number code goes like this: ydddyfnn. y&y is year. ddd is day number of year. f is factory (0 for kalamazoo, 5 for nashville) and nn is guitar stamping number for that day. So yours was made 29th April 79 at Kalamazoo and was the ninth stamped that day. I own an 82 (Nashville) ES 347 and it's just the loveliest guitar I own.