Is this grammatically correct? "This is evidence of its being an antique from the 14th century."?

Question

Is "Its" correct or should I use "it" instead?

Answer 1

<>"It" is better; if you are going to add an "s' make it "It's" (it is).

Answer 2

It's not grammatically correct..

You could say..

The supportive evidence that this ___________ is a 14th century antiquity is as follows;

or This is evidence of support that it is an antique from the 14th century..

OR The evidence to support that this is an antique from the 14th century is

Answer 3

It's an awkward construction in any case. Try one of these:

"This is evidence of its antiquity."
or
"This evidence supports a 14th century origin."

Answer 4

Druid is wrong.

Its is correct; you're indicating the possessive of the phrase "being an antique."

Answer 5

IT