Resource for Martin Birth Dates or Serial Numbers.
I am wondering who is the go to person to find out exact Birth Dates or Stamping Dates of the serial Numbers on Martin Dreadnoughts. Used to be Mike Longworth, I called him about 2 other older D-28's one was a 1954 and the other a 1941, he was able to narrow it down to almost the day in these two cases. So now who or what is the resource for this information?
I use this resource: