gerrah... I think and type, so here are my thoughts. Some of what's mentioned may or may not affect value. I am going to show this to an associate to get an opinion.
I know age wasn't really the question but 50 years would place it at 1960. I mean, I know dealers who have 80 year old rugs unused in inventory passed down from ancestors/inherited, so I don't think it's out of the question
I would expect a 50 year old Heriz to have a few more colors and slightly more contrasting outlines. But characteristics like the thick corded fringe/warps do indicate the age could be very likely. It could be newer - like maybe 25 years old (going by the combination of colors, especially plum and field color), but I think the lighting may be misleading showing the colors to be a little more "warm" than they really are with a bit of a gold overcast: 7602small.jpg may be the more accurate colors as opposed to the "oldsmall.jpg". Maybe lemon washed for luster or was cleaned at one point or maybe walked on a lot with socks. pile fibers look very straight and polished.
For some reason I counted 6x7, which is a little coarser than most would attribute to a Heriz, but there are so many weaving villages in that area a lot of dealers call them Heriz anyway. I don't think this is Goravan or Mehriban, but could be something like these smaller villages that receive Heriz attribution.
The weaver used a few colors meant for design elements in the border, one area looked as though there was slight oxidation. Colors are very interesting, but there are some very slight inconsistencies which also in my mind make me think again it may have been washed.
Price with a rug like this would depend on when the seller purchased, so I am going to confer with an associate as to a current US retail on this. In the meantime if you may have comments on the above that's great