BigBill said:Perhaps a quince? Smallish, hard, Apple like fruit makes it a quince from what I see.
Looks like a quince to me, too - and a very healthy and prolific one at that.
I cannot tell if it is the ornamental or culinary type. You may be able to tell by removing the seeds and cooking it. From what I read, the culinary quince is tart but tastes good and smells really good. The ornamental quince is more tart and less flavorful. They are not eaten raw.