Here is one that has sold recently:
https://www.ebay.com/itm/492746-Coi...047675.l2557Your friend's coin has a more appealing shape, but as the legends are more worn, and the date is incomplete (maybe it's more readable when you have it in hand), that usually detracts from the value.
Still, this gives some guidance on the value.
Edited by tdziemia
09/09/2018 07:03 am