Just stumbling over old threads looking for HJ numbers to link to the sticky thread, and finding a few "dead" threads..
What i can add to this thread is that there were, with 100% certainty, smaller versions of the HJ diamond badge. They are even found in print, offered in the "normal size" and the "smaller than normal size"
edit: I have no problems with the shown stickpin, in fact it is quite easy to see that it is an honest original. I dont know when they died out, but some time after mid 1935 thats for sure. Although the RZM regulations do state a price for a lilliput version of the parteiabzeichen, they only state 1 price and size of HJ diamond. In any case, there are quite a few makers marks on these as well. And of course fakes too! but they are a legit and documented TR item