Neil Lennon was struck with a one pound coin thrown from the crowd during Wednesday night's Edinburgh derby between Hibs and Hearts.
"I’m all right, I got a couple of quid," the Hibs manager told the Daily Record after the game.
The coin being thrown followed Lennon celebrating a disallowed Hearts goal.
"It's no laughing matter," added Lennon.
I hope someone deals with it and I hope to meet the guy face to face.
It's not on, it's disgraceful. Players are out there to get results and entertain people. I don't understand the mentality of a supporter who wants to throw things at people. I saw plenty of it at the weekend as well and it's very unsavoury.
We do not condone that behaviour at all. It's absolutely disgraceful.
Lennon's former Celtic teammate, Gary Caldwell - who is now manager of Partick Thistle - criticised Lennon for his behaviour.
"I think he brings a lot of it on himself," Caldwell told BBC.
"Whoever throws something from a stand should be ejected immediately but Neil Lennon was goading the fans as that goal got disallowed.
"As managers, coaches, players, we have to have a level of professionalism to not incite that and I think at times he does."