Trumpet for sale - 1956 F.E. Olds Super

I have a 1956 Olds Super serial# 207766. It is in excellent condition minus a slide trigger but I was told these are easy to come by and is contained in a vintage Julius Keilwerth case. Included are 2 mouthpieces one is a Vincent Bach 7c in good condition and the other is a J. Parduba *5* pat no. 2018738 and it looks worn but restorable. Also the reason why I posted this was to see if anyone knew about this particular horn because it has an engraved autograph on the left hand side near the bell that reads "Maynard Ferguson".