Definitely a candidate for the acetone bath !
That being said it has every appearance of being genuine.
Just for 'larks' I once took a Victorinus 'ant' that had been stripped down to bare metal and sprayed it with a quick blast of Rustoleum !
This was after having acquired something similar looking that the acetone washed away.
The results had a similar look !
Toning down over cleaned ancients is not dishonest.
But using paint or dye crosses the line