This KW as a nice gold 14k sleeve
This lighter was most probably produced in Czech. Isn't a KW but due the similarity I put it in the category.
If you look at the Edro from Drollinger you can see that most probably is the same lighter. Probably Drollinger produced also for KW
This should be the first version of this type of lighter. Closed to the Prima KW logo you can see the letters A&P. Most probably these are related to Altenpohl & Pilgram