Constantinople dreamed by a medieval man

From the Luttrell Psalter (fol.164v),c.1325-1335, England

Vellum (calf skin) 330mm×240mm
24Kt japanese gold leaf
Gouache painting

The Luttrell Psalter is one of the most famous medieval manuscripts because of its rich illustrations of everyday life in the 14th century. It was made in the diocese of Lincoln for Sir Geoffrey Luttrell (1276 – 1345) of Irnham, probably sometime between 1325 and 1335.

At the foot, a representation of Constantinople inspired by an English walled city, with a church in the centre and houses. On the left, dancers emerge from the gate, two musicians play a cornet, pipe and drum, while women admire them from the battlements.

This form of black letters is called gothique precissa.
This is a rare calligraphic style, It has disappeared with the times, and there are not many books written in this style.