I can't help a ton with the year or anything, but those are his Vara pumps - one of Ferragamo's most classic designs and my personal favorite. Definitely vintage; not sure if they're real croc though :) good luck!
They look like Varas, but I cannot tell if they are authentic.
Also, I edited your original post to remove the selling aspect.
No worries. Didn't realise that was uncool. Good to know about the Vara. I wasn't sure if the previous seller was accurate. Is there something I can look for or show you to help figure out if they are authentic?