these several years ago, still have them. That's original paint and they came off of a 71 340 (Duster) notice the wire tabs on the pass side. Forget for a minute that they were on a 71 Duster, let's assume for a minute that they could have been swapped on and that they were on a 70 at one time. One thing is for certain, that's original factory paint and they only painted 340's orange 2 years, 1970 & 71. So, the quetion remains for what period in time did this style get used exactly?

My 1971 Duster 340 has these type valve covers. it's a late build car, (july 9th) and has the blue color engine..