As winehog.org says “While there is great interest in the Grand Crus, much can be learned from the lesser wines – including the ability to produce pure and detailed wines from the lower-end appellations.”
This particularly applies to domaines like Jean Chartron where there is a wealth of Grand Crus but also numerous Villages wines and a super old vines Bourgogne Blanc. All wines are made with great care and attention to detail and at Bourgogne level you can really see just how good Domaine Jean Chartron is.
It is probably not surprising when the source for your Bourgogne is Puligny-Montrachet and nearby from vineyards planted in 1944, 1945, 1946, 1960, 1990 and 1991. This is a true Bourgogne Vieilles Vignes.