From memory there were a few models from the Bankers down to the Standard TDR with that appearance and door furniture- looks to be the earlier pattern handle and pull- iirc, when they updated to 1st strength they changed the bolt throw handles and the D pulls from those earlier castings, which helps identify.
The serial number should identify which model with certainty, but your safe has a noticeable difference to most that age and appearance -unusual to see both locks above the handle, the more common configuration is one above and one below, so that difference alone might narrow it down and identify it.
I’ve got brochures for loads of Chubb from that era- bankers, standard TDR, resolute etc but all are back in storage. Can look when next dig them out , hopefully someone else can identify it sooner. I know zero about Germany’s safe imports or their PO grading system etc .
