Here are those cufflinks.
I bought them a long time ago (1960's), long before I knew anything about watches.
I got them in a local department store after I bought my first shirt with French cuffs and needed a pair of cufflinks to go with them.
I had put them aside for decades, thinking they were a bit gaudy but after falling in love with watches, I took them out and had a closer look. Now I wear them from time to time and that usually elecits quite a reaction from other watch aficianados.
When I said they were "real", I didn't mean real gold...rather real watch movements!
They are either plated or sprayed with gold paint. Each is different and if you look closely one still has the balance spring intact.
I've never heard of either company, Helbros or Hamann and Koch but they are both Swiss-made.