Hello everyone. I was just recently "browsing" at my local gunstore when I noticed a peculiar looking 70 series colt. It turned out to be a Mark IV Series 70 9mm. I have never seen one of these before and was really interested in it. If I wasn't waiting for my Series 70 Gold Cup which I just finished paying for the 9mm would be in front of me right now (buy first and ask questions later). I was wondering if anyone could provide me with any info on this model. It was a beautiful "shooter" about 90% blued and the shop was asking $600.0 and change. Is this reasonable? Thanks for all of your help.