The shape of are different if you do now own both....... especially the lug of 26K are bigger.....than the old one, body so wider a bit....have to observe one by one..........then the no. font on dial are different.
26 K font is wider and a bit bigger than the original one..........color is pencil grey indeed............my one also the same.....is darker once compare with the new one.
just my 2 cent..... ;0)