Boy, I'm batting a thousand with these questions....The vehicle was the 8.8cm Flak 18 (Sfl) auf Zkw 12t. This was an Sdkfz 8 12 ton halftrack that mounted an 8.8cm Flak 18 on it. The cab and engine were armored. 8 S.Pzjr Abt had between 10 and 12 assigned (sorces disagree on the exact count). These vehicles served from Poland through the early part of the Russian campaign where they finally were all lost through various causes. I pass the next question to Knightmove as at least he did try.