Well, the ones shown in the initial post are not actually war tokens but post-WW1 notgeld. Those two were minted in Meißen and by Meissen for the state of Saxony (Sachsen) as it says on the pieces. The company or porcelain manufacture still exists. More porcelain notgeld is here http://www.notgeld.sewera.pl (page in Polish and German) for example. Christian
Some are common, some get quite expensive. I believe very little of the porcelein notgeld ever actually circulated, most of it was sold to collectors to raise funds, the same as much of the paper notgeld. The metal notgeld tokens on the other hand did apparently circulate.
We just had a Coin Club Member do a talk on these, very cool, they do come in different colors, white and i think black, he had maybe hundred different coins, some are very expensive...so i got one just to say i have one.. Sachsen 1921 20 Pfennigs
Don't try it out - your teeth would not like it. But yes, just like chocolate, those porcelain coins made by Meissen (the Freiberg pieces were minted there too, see the crossed swords mark) come in different "colors". Eng already mentioned that; here are some more Freiberg issues where you can see various types: brown, silver-plated, partly plated etc. http://www.notgeld.sewera.pl/index.php?l=de&co=freiberg Shortly after WW1, Meissen had plans to produce ersatz coins for the Deutsches Reich. But the government in Berlin said No, for a variety of reasons ... Christian