The back of the postcard has a postmark of April 12, 1916. The condition was somewhat optimistically listed as Near Mint.
It is thought by most hobby experts that this postcard was produced in 1915 and was perhaps first distributed during the World Series. Today, a couple dozen known examples remain, making it somewhat more scarce than the T206 Honus Wagner. Of these examples, only a handful might be considered "high grade" and very few have a period postmark on back and verifiable provenance. SCP a uction record -- "Copeland" provenance.
Sotheby's "important events" timeline. The item "1915 Boston Red Sox Real Photo Postcard with Babe Ruth from Copeland collection" is in sale since Tuesday, March 10, 2020. This item is in the category "Sports Mem, Cards & Fan Shop\Sports Trading Cards\Baseball Cards". The seller is "bmw_cards2" and is located in Madison, Wisconsin. This item can be shipped to United States, Canada.