The (s) version has different stats and sometimes can be a lil better then the non (s) version. Issue is that if you want the addition benefit of the relics, you must make sure that the (s) or non (s) all match or have enough of the relics to improve you stats that your after. I think I have some (s) and non (s) of the same relic, if I can find them I'll put a SS here.
I have a question, I cannot find any information about the KL 11/11s/12/12s on forum or any screenshots about it. Are they event relics or any reason ppl rarely reveal the screenshots about? Thanks. Also in game, I dont see any crafting system related to them..
Kl11 and kl12 sets are from previous events and there is only one version of it Kl6-10 have a normal and (s) version Difference is set bonus stats! Kl11 and kl 12 are by itself a S version of kl10 with a bit higher stats!
https://forums.playredfox.com/index.php?threads/7th-anniversary-celebration.55861/#post-518558 11s and 12s are just community-made name of those Jade brooch relics.