Now still have a plan for a crown of Serbia or in the future?
Following are some information might be useful about it:
Title of the ruler: veliki župan(Grand Prince)--> King of Serbia and Maritime Lands(since 1217 the Serbian Grand Principality was promoted into a kingdom)
Place of coronation: Ras
Name of the crown: Круна Стефана(crown of Stefan)
Pic for the crown(a real one): https://upload.wikimedia.org/wikiped...%C4%87_14c.png