Region Badges Over Time

(A region can have two such Badges, mapper and ruler):

Find the region history of WalterBlue.

Isengrim, ek95, Trolske, Saturnglimmer, Body242, TXL1, DaanVZ, Lingonberry, Aguti, Goldesel, Megachip, drii, Barney.vk, blaues_Wunder, T-Rex, Pieper, Jaroslav, Moggus, Kosmokrat, kknkj, Dasm, LeiLar, Bart23, SzyMarek, Herr_Korn, Bomo, BoF-GB, Jaxel, spiceWeazel, Ilexa, Derholzspan, michixlol, Knuspakex, werla, KlapperKero, HaraldLegner, Wurm, thorkel, Schatzforscher, Hugosoft, allerding5nein, Goak, Heisenberg, DasUmmi, Badger, carlptr, 4N3G4ZPK, QueenOfNowhere, vortex23, redgate, Gammelsmurf, MasterFlo, Loki, Nananana, MegaAnt, Skralg, wuffel, kredrimi, Hunter, pj007, Ellikatz, Daiten, gotchas, TrickyFoxy, Corence, Amonamarth, CrazyChris, Kleiner, Gaensebluemchen, manjartens, radvaisin, NasenBaer, doinsk, Phii, AleksUA, Uschidibb, nateril, MCrideordie, gemslein, jenzanos, Anolis, lena_parshina5, DI74, Blackcats, augxcgrwxo, shibby_ronson, toki_pona, Bumblebee, Mannivu, Drabr, _yak, godosoy, Blink67, Flomme, olifant, XLV1, rabe85, gokp, dessek, onlineflow, Eule, Walkeroi, Coconut99, windthings, Elianahere, gasttor, Steff, wolfie112, GeHa, jellybelly, nirub, xwusel, idle, VincentVega23, Laphroaig, Chmmr, asp_fan_cb, CodeAsm, Saniafeh, VRHero, Sergeich0, Usagi91, olilo, RudiTeam, loptsky, Nick, Mottenmann, InI4, Jerk, Leckmuschel, Ardik, MyeyesBurn, color_poisoning, 1Test1, Busterania, Svenibeu, Felix11, dorima, Venis, oldfather, erebos, lucy, Tanuki