The value of a pushbutton is in originality, fortunately it looks like you have all the original parts and then bronze metallic is a rare color. That said there's a good deal of work to get it to a quality that would demand top value, it truly depends whether you have the time and inclination to restore it, if that would be a check book restoration then you are unlikely to see much of a return on your additional investment IMO.
I'd say when done it could easily be a $150k car, but I'd estimate $65-80k as it sits, the lower number reflective of non running condition, the upper if you can demonstrate it starts and drives. Just my opinion in current market, others may disagree, but no one has yet provided their opinion on the question posed to value.
PS. I'd lose the nitrous bottle before circulating further photos!