I also noticed that most Antartic models have roman numerical system, but last night I found a Antartic 17 on a German sales-platform, it was a ladies watch. There wasn’t any information about but it seems they made more models after nr 10
I also contacted Nivada Grenchen in Switzerland and ask for any information. Regrettably they didn’t have any to give about the vintage Antartic models because it was lost when the company was sold.
”..I regret to inform you that we do not have any documents or records about this beautiful timepiece watch because Jacob Schneider transferred this company to the previous owner and all the records about vintage watches are lost…”
But I will be looking for more information, in the meantime I’m going to have the glass changed but as my watchmaker told me I’m looking too spend more on a glass with a magnifying window (for the date) then I spent on the watch. But I think that will really make a big change. I only polished the glass when I got it