I am not sure if this is a revision of post 1640518, because both sources lead to the same picture.

WhatTheFox said:

I am not sure if this is a revision of post 1640518, because both sources lead to the same picture.

The number at the end of the source means that the artist uploaded this as a revision and thus it replaced the old one at the same address without wiping the view and favorite count; it's a Pixiv Premium feature.
EDIT: For reference: 42329029.png?1395159526
The text was changed to a lighter color, and the outlines were replaced with reds instead of a hard black.

OOZ662 said:

The number at the end of the source means that the artist uploaded this as a revision and thus it replaced the old one at the same address without wiping the view and favorite count; it's a Pixiv Premium feature.

Oh, alright.

Wants belly rub.