Your lighter is kind of an oldie - it's made in the USA, probaly in the 70's.
There used to be any number of imitators of the Zippo lighter, most of which were cheap and very often used as advertising promos, like yours.
Some names that you might see in this flip-top lighter line are:
Wind Master
Wellington
Penguin
Prince
Konwal
Idealine (Japan)
Royalite
Hadson
Storm King
Golden Bell and of course,
Park, like yours.
There is no small amount of collector interest in them, from what I can tell. They have at least two collectible requisites: they are both useful and moderate in cost. Besides, nowaday with the Do-Gooder "we-know-what's best-for-you" social propoganda/engineering working against tobacco, they are only destined to fade into obscurity.
Youre off to a good start in collecting them.