Rare vintage wine - 1975 Valpolicella - £25 *

Hi there, I have recently been given a lot of old wine from my grandparents and here is one of them: 1975 Valpolicella from Giacomo Montresor Italy. This is very rare and i have found another one simmilar on the link below for an idea: http://www.ebay.it/itm/VINO-1977-RECIOTO-DELLA-VALPOLICELLA-AMARONE-CLASSICO?item=190301648668&cmd=ViewItem&_trksid=p5197.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D2%26po%3DLVI%26ps%3D63%26clkid%3D1017845323081295775 Thanks for looking.