Hi,
Good question.
There was only one maker Rhote Vienna
You can see all the marks on the firs Class ring
The first awarding was on 28 of October 1887 and the last in 1906
The standard medal had 4 lilies on the back however there are medals from first Class with 5 lilies Why only the maker can tell us. There were no restrikes. Only there are existing bad quality fakes I have seen 2nd Class "upgraded with modern soft enamel very Good news all of those fakes are bad quality.
The market value is the same Mainly from collectors point of view it is nice to have both variants of the first class but it is not a must.
1st Class -699
2nd Class 1019
3rd Class -475
Total -2193 were awarded during this period