Stock is tight to metal. This has the early version round Haenel logo on top of receiver. Mid 1920's to 1930's. From the personal private collection of Dr. Beeman (of Beeman Airguns) and has a brass tag on trigger stating this along with it numbered, #1348.
This exact piece is on page 615 of the Blue Book of Airguns, Thirteenth Edition, by Lisa Beuning.