Pressed for a pre-64 Beetle with the smaller side window aperture, it can also be adapted for later cars by using the metal work below the swage line. The B pillar has a threaded plate attached for the door lock and there are captive nuts present for your wings.
Potential panel purchasers can find this part on Heritage Parts Centre.com using item numbers 111-809-159/B and 111-809-160/B . Alternatively count out £86.50 per side and give their Sales team a shout on 01273 444000 and they’ll pop one in the post.