This property defines the Unicodes which have Coptic script
Characters like Ϣ,ϣ,Ϥ, etc. are listed under Coptic Script.
137 Characters are present in Coptic Script starting with the Unicode point U+03E2 that represents the character Ϣ.
Currently, as per latest version 15.0.0, Unicode supports 164 number of Script. Here are a few examples - Adlam,Ahom,Anatolian Hieroglyphs, etc.