I did a doube-take when I saw the year. This seems so advanced for that period. The painter is even using some perspective tricks on the tables. The basket in the bottom left corner is an example of how most medieval paintings handle perspective.
14th - 16th century AD was a time of great innovation in art! Many of the artistic ‘rules’ that assist in accurate depictions were developed then, moving away from the more static and flat depictions of the earlier medieval period.