Examples of the type

Picture 1 of the example of 1 Jiao Picture 1 of the example of 1 Jiao
© ngdawa (CC BY-NC-SA)
Private collection
1980 – (en) Serial # with 2-Letter prefix
Picture 1 of the example of 1 Jiao Picture 1 of the example of 1 Jiao
© rsirian1 (CC BY)
Private collection
1980 – (en) Serial # with Letter-Number-Letter prefix