Wadmalatz, thanks for listing those alternatives. Out of all those, I'd pick lebhaftrosa(eosin). As it happens, I came to the conclusion that it was an eosin shade last night, without knowing that any such shade was listed.
The reason for this was that it's very similar to the eisin shades of the Australian KGV issue.
Unfortunately, there's an example of this shade available on an auction website, and it's not remotely similar to my stamp:

So I wish there were a dunkelrosa(eosin) or rotkarmin(eosin) option!
And, yes, it's an 1889 cancel.
Horamakhet, I think you'd need an expert to tell you if any of those shades are worth anything. Some of the high value shades look - to my eyes - virtually the same colour and I can only assume that a difference is determined by means of UV light.