My copy which I also bought in 1977 is a clear almost beige color. I have always believed the record to be a boot but my concern has been with the picture sleeve itself. The exact year your copy was pressed depends on several factors including cover construction and printing details, the color shade of the title, label variations, inner groove markings, etc. I can let you know about cover construction and inner groove markings if you tell me what I should look for. Thanks a lot for your help.
Later pressings have green ink.
A Jacksonville pressed mono copy thus rules out it being a 1st pressing. Of course, if it Jacksonville is listed on the bottom rear cover, it's also not a 1st pressing.