Actually no CD..It was done on purpose by the artist..truly.. It changed over time..
EVOCATIONS OF JOSEPH'S AGE
The 16th century also saw a change in the portraiture.
A common approach previously had been to follow the Protevangeliumin making him an old man – balding, graying, often leaning on a cane. This kind of portrayal started to change at the turn of the 16th century, as Joseph became more youthful (
example). The change was encouraged by Molanus's spirited insistence that St. Joseph should be portrayed as a young man (
De Historia SS. Imaginum, 269-73).
Earlier writers had thought the traditional imagery necessary to maintain belief in Mary's perpetual virginity, but Molanus argued that it was far more appropriate to show a young man capable of restraining his carnal urges, like his namesake Joseph when tempted by Potiphar's wife (Genesis 39:1-20), someone virile enough to take his wife and child on the difficult journey to Egypt, support them there with his labor, and then return them to Israel (Matthew 2:13-23).
https://www.christianiconography.info/joseph.html