1952-S/S 25C RPM FS-501 MS66+ 认证号26997167, PCGS号145023

This is ANOTHER coin that the price guide is WAY OFF. How can a coin drop from 650 to 200 in 1 week when there were NO SALES? All of the 67's are in strong hands as are the 2 66+ and yet the guide drops that much? This was a real disappointment and would love to know where they came up with the price? 190 after grading fees............