need help identifying this guitar please!

[iXDd]

So i got this guitar at market type of place and all the old guy that sold it to me had to say was "its iron maiden! it was my sons but he's dead! you want it?" it doesnt have any writing on the body at all. theres a piece of paper inside though that says ALLEGRO MUSICAL INS CO TYPE : FM SERIAL No. 40
http://img17.imageshack.us/img17/4445/sspx0765.jpg
http://img245.imageshack.us/img245/3350/sspx0768.jpg
any help much love!