Mystery Lock

[Ronald Sieber]

I found this lock in a cache of parts and am wondering if it is a Porsche part?

The body is 2.75" and overall (including the ears) 5" long. It weighs a little over 14 oz.
The threaded portion of the opening looks to be 12mm X 2.0.
The lock pieces rotate at both ends and also deflect when pressed.

Any ideas what it is? A Porsche part?

=rds

[Martin Benade]

I wonder if it something like a spare tire lock for an external spare? At first I was thinking an engine anti theft item but that would not have a 12 mm nut.