Found something neat last week. The above is a reproduction of the Seat of Moses, a chair found within a Synagogue where the rabbi would sit and interpret the Torah.
https://www.hmdb.org/m.asp?m=140472
It is mentioned in Matthew 23:2-3.
It is not mentioned in Luke 4:20. But I suspect that this is where Christ ‘sat’ when he made his declaration.
“And the eyes of all them that were in the synagogue were fastened on him.”