So I was doing some Googling on the lighter for you and didn't find anything, but I did find this website and maybe if you poke around some or email the guy you could get some info. The site is in a different language but he has Google translater installed so hope it works for you.
Link to contact info and other links.
http://benzinaky.com/Odkazy,_kontakt...oogtrans/cs/en
Link to his homepage.
http://benzinaky.com/Benzinaky_-_Vit...oogtrans/cs/en
Lots of cool old lighters there.