Hello Paul,

: I am doing a little research on the 2446c GMT compression case and
: will post my results with pictures soon. In the mean time can
: you tell me if the backcase has a light engraving with AUTAVIA
: and Heuer Log off centre and further engraving around the outer
: edge or is it plain/polished s/steel.

No, I can not detect the slightest sign of an engraving:

Here the inner side:

Would be glad to provide further informations.

Regards,

Michael