I have acquired a display that has all of the original knives(the ones hung in the viewing panel. No boxed inventory). By reading the "Tang Stamp" thread it looks like the knives are from 46-73. Is there a way to narrow the dates down further by looking at the style of display case or any other methods? And is there a way to estimate value on this...not looking to sell, but would like to know what I have. Also, from sitting in storage for 20some years some of the knives are showing a little surface rust. Should I be trying to clean and protect or would that destroy the integrity of these knives being untouched for so long...if that makes any sense. Thanks for the help. Until I figure out how to post pics from tapatalk....I have no pics 
