Hello all !
I'm considering buying an old lens and fit on my Toyo 4x5 view camera but have no clue about which one to get.
I've seen some pictures taken with a Petzval and they look pretty amazing with loads of blurry edges and very sharp in the center, the exactly effect I'm looking for. I've seen lots of Brass lens to be sold on ebay but not sure if they're what i'm looking for. My questions are:

Some of those lens doesn't come whit a shutter, what to do?
Any tips and tricks for taking pictures whith this kind of lens?
Is my Toyo camera ok for this type of lens?
What's the average price for a reasonable one ? I know this lens are 100 years old...

I'd really aprecciate any help...
Thank you!