I'm new here and to watch collecting in general. Somehow I got bitten by the bug and now I'm deep in watches.

I recently purchased an older Carl F Bucherer Patravi Chronograph GMT (from the early 2000's from what I can tell). I don't recall exactly which movement they use but I think it was before the were using their own in house movement. Most of my GMTs use the caller GMT but this one is the only one I have that has a jumping hour hand. The GMT hour is adjusted by adjusting the minute hand and the date is adjusted by using the hour hand.

The question I have is can you adjust either the minute or hour hand backwards? Some of the more recent CFB Patravis seem to allow for this based on the instructions but I don't know about this older watch. If anyone has any input, I'd appreciate it!