1972 definitely.What do you all think?
I blew up the picture and played with exposure and contrast, and it looks like that digit has a corner at upper left, and the lower loop is open, which point to a 5. If you want to make sure, clean the area and take more pictures with light coming from different directions.It definitely looks like the 3rd digit has a curved top, but it looks a little different than the 3, so I'm going to assume it's an 8.