In my experience, the lever placement is random. The client, presumably, would discuss which he preferred and order accordingly on higher grade guns. I find a left hande side lever very easy to operate as a right hander - the lever is just above your right thumb when you fire the gun and movement to open it is minimal.
I find a good number of left handed shooters choose a side lever - as it is easier than a right handed top lever to use.
I don't tend to post guns I have for sale - I think it would be inappropriate to try and sell guns directly through this forum. Mostly, I show interesting things I have as do-ups for clients or which I have sold but have photos of.
I do try to keep my website up to date with stock and the vintage guns facebook page too - you can always check there.
On the subject of levers, I just had a Paper hammergun with left-hand top lever and a side-lever Dougall hammer gun in 20-bore with POW feathers on it. Not sure either will make it through lapping and re-prof. Damascus barrels are a little pitted (gun-dealer understatement). Still, uncovering interesting things is what makes this fun.
Last edited by Small Bore; 08/03/13 05:40 AM.