I was playing a gig Sun. Feb. 21 and someone brought in an old Guild to sell for $200.00. Yes I bought it. It is a great box....but...upon looking in the blue book today to see just how well I did...(I collect Martins) found no listing for it. Maybe here I can get an educated guess. Guild, X200, Ser.# 1372, Made in NY NY before they moved to NJ, Arch top, Two black adjustable pickups, Lyre tailpiece, Sunburst finish, five ply pickguard, 17 1/4 in. body width, 3 1/2 body depth, Kluson Tulip Tuners, Rosewood adjustable bridge....any help would be appreciated.