This was made around 1956-7. The Indianas were a student to intermidiate, but a fairly good horn. There is definitely a good chance to find any missing pieces, these horns are often on ebay, and a overhall will run you anywhere from $450 - $1000 (about 346-769 Euro's) good luck.

Hi! I have a Martin Indiana myself but minds is from the late 20's and it is all silver it looks like a martin handcraft tenor.My tenor sounds great,I feel its one of the best sounding tenors i've ever played.the horn may feel a little weird but once you get use to it ,its a whole different story.If your gonna buy a Indiana the highest I would pay is about $100 to $400 maybe $500 if its mint condition.I doubt it needs a over whole.It just needs a tune up probably. The max it could cost you from a good repairman to fix it would probably be $175.That Indiana could be a great back up horn.If your Indiana has a gold laquered body, nickel, or silver keys its form the 50's or 60's.

Well good luck and I wish you the best.