On the picture: The ‘kitabe’ (building inscription) of this ‘Fakih Dede Türbesi’, above the entrance door. It dates from 1454 and is written in (Arabic) ‘nesih’ script. The corners above are adorned with glazed tiles.

Nesih (or Naskh, from the Arabic: نسخ‎ ) is a specific calligraphic style for writing in the Arabic alphabet, thought to be invented around 900 AD. The root of this Arabic term nasakh-a (نسخ) means "to copy". It either refers to the fact that it replaced its predecessor, Kufic script, or that this style allows faster copying of texts. With small modifications, it is the style most commonly used for printing Arabic, Persian, Pashto and Sindhi languages.

Correspondent: J.M.Criel, Antwerpen.
Sources: Website of ‘konyaturistik.com’ & Wikipedia.