Can you give us anymore to go on? I’ve got several guesses that look close. If your from a colder climate my suspicion would lean towards one of these http://www.growingfruit.org/t/canadian-pears-enie-menie-miney-moe-phileson/9516. Your pear is not round enough to be a typical Savignac Ronde Verte but the ripening time is exact. Parker pear in a shaded location in less than ideal circumstances can look somewhat similar https://ask.extension.org/questions/147848 . Do you have any additional pictures?