Goldkrone

I noticed that there's a distinct lack of competition sets for collectors of gold and silver coins from the German States that were part of the German Empire (1871-1925).

For example, I just won at auction a 10 Mark 1907J Bremen gold coin, NGC number 12062781-027. There is no Bremen set I can add this coin to. 

PCGS for example has the Bremen complete silver and gold set (circulation strikes):

https://www.pcgs.com/setregistry/germany/german-states/bremen-complete-silver-gold-set-circulation-strikes-1904-1907/2300

It would be great if a similar set could be added for NGC. 

It would be nice if you could also include German States 20 and 10 Mark Type Sets (circulation strikes) like those included by PCGS:

https://www.pcgs.com/setregistry/germany/german-states/german-states-20-mark-type-set-circulation-strikes-1871-1915/2394

https://www.pcgs.com/setregistry/germany/german-states/german-states-10-mark-type-set-circulation-strikes-1872-1913/2391

Finally I am also missing a complete 5 Mark gold coin set (1877-1888) (German states, Empire) like the one offered by PCGS

https://www.pcgs.com/setregistry/germany/german-states/german-states-5-mark-gold-complete-set-circulation-strikes-1877-1878/2387