Great Britain, 1874, 5/- Pale Rose, Pl. 2

Yes, I had noted that potential killer-cancel lurking over there at upper-right. I just got that one last late spring to early summer.

The two stamps have a number of design elements that make them appear similar. When you look closely, they have almost nothing in common.

Different font
Value at bottom with number or in words
Large white corner letters or small coloured letters
Typographic elements in colour or white
Background to typographic elements and corner letters inverted
Plate number in design or not
No value tablets besides portrait or value tablets besides portrait
Inner frame line or no inner frame line
No inner frame or thick inner frame in typographic elements
Side ornaments are thin lines or side ornaments are pillars with chain
Corners to portrait are not broken at centre or broken at centre
Outer line of pearls to portrait frame or no outer line of pearls
Thin weak lines as background to portrait or fewer strong lines as background to portrait
Smaller portrait or bigger portrait

In that event, we'll just have to agree to disagree.

Then, below, the top two are substantially, but not utterly, different. Then still, the Georgian 10/- is another animal nigh entirely...

Incidentally, I just had to have that Edwardian 10/-, and with its "flames".

Have a look at these plate 1 examples, that I've had for many years, along with the plate 2 in question...

They're all a bit doggy, but I like them all the same.

They have the same size and are both blue. The side ornaments are the same. Other than that, every single design element is different for both stamps in some way.