Although not so well known to all collectors these early ones are very rare and it's possible the later chromed ones are even more rare, it's not everyday you'll find one of these, especially since the non-plated variant were made only until October of 1946, when the wheel was then changed and the casing was chrome plated. The lighter was changed again in very early 1947 where the case was made of brass and the chimney was altered to how it is today. The 47 Zippo's cam was squared off and there was a change to the Zippo logo on the bottom of the case, so the "46" to very early "47" (first month in or so) are hard to find especially in good-mint condition.
Notes: Its possible the production didn't go into 1947, as there was no real dating system for Zippo's back then, it's hard to know for sure.
The non-plated variant stopped production for a few months until the newer flint wheel was designed, so the plated tall case variant may have been made from left overs.
The overall production run of these tall case Zippos was about 1 year or less.
Type 1 - Non-plated Nickel silver case-Horizontal flint wheel
Type 2 - Chrome plated Nickel silver case-Diagonal flint wheel.
Both - Rounded Cam-14 Hole chimney-3 barrel with wider middle barrel