Pre war reinforced helmet liner with period attached Luftwaffe chinstrap size 66/59

Textbook pre war German helmet liner with period affixed chinstrap. The helmet liner is a textbook pre war reinforced aluminum example marked DRP Schuberth Were KG Braunschweig 1938. The liner fits a size 66 shell with the head size 59. The chinstrap is marked Gebr. Hast Dresden 1938 and retains its Luftwaffe acceptance stamp (LBA)