if ch means original case colors, then a 95% 16 ga ghe could bring big bucks...morphy auction and rock island auction would be good places to seek professional appraisals...or a gunbroker reserve auction, with a high reserve would be beneficial in determining the current market value of your gun, without risk......
also, the parker collectors offer a factory records research service that could be valuable in establishing the original factory specs and history for your gun...which may significantly enhance its value...or lower its value if it is revealed that the barrels have been shortened or the stocking configuration has been altered...
then there is the parker serial number book, which can provide some order information...my copy is not handy, but perhaps another member here will look up # 211775 and report their findings...not all numbers are in the book, but this one might be...
Last edited by ed good; 04/27/18 11:49 PM.