The official Japanese DVD box sets (e.g., "Doraemon DVD-BOX 1979-2005") are the source of all "best" raws. While expensive, they are the definitive master. Second-hand from Mandarake or Yahoo Auctions Japan (using a proxy like Buyee) is the legal way to own the best raw material.
"Preserving Nostalgia: An Analysis of Doraemon (1979) and the Quest for the 'Raw Best' Episodes" doraemon 1979 raw best
When searching for "Doraemon 1979 raw best," you aren't looking for filler. You are looking for the legendary episodes that defined the franchise. Here is your checklist of the absolute best raw captures: The official Japanese DVD box sets (e