Stellaland 1884 QV 1d Red, 3d Orange + 4d in very odd Blue colour Unused SG1-3

Queen Victoria era 1d red and 3d orange unused (no gum) along with a very odd looking 4d in a blue colour - presumably this a colour changeling - all stamps appear to match the characteristics of the genuine examples, but am not sure why the 4d is in this very odd shade. With hinge thin on 1d red. Without gum.

Year : 1884

Reign : Queen Victoria

Catalogue No : SG 1 - SG 3?

Condition : Unused

Price : highest bid