The first Zippo lighter was created above a garage in Bradford, Pennsylvania in 1933 by George G. Blaisdell. 

According to Andrew Turner, writing for AuctionBytes, "The most sought after are the early models with the metallique advertising designs. Town & Country and leather wrap models are quite desirable as well. Mint condition and/or in the original boxes increases value greatly."

For the latest hot listings on eBay, we have zippo lighter listings.

Resources:
Zippo Click -  The collectors club for the worldwide clique of Zippo lighter enthusiasts.
iCollectZippo - The Zippo Lighter Price Guide