Both your options seem the same to me but I would try it at: PEE - ZOEZ. That is how I have always pronounced it.
One of my favorite stories from 40 years ago is one most fellow bottle diggers think is a "Fish" story but it is true. While digging a privy in downtown Santa Ana, California I dug over 30 PISOS out of that single pit. They were in a full range of color from pale aqua to dark green. I didn't think all that much of them at the time except for the number out of one pit. Wish I still had them all together. By the way, I have some witnesses to that story who are still living.
I live one town east from where Piso's, the Hazeltine Co. Warren, PA, was based. Have dug quite a few, sometimes numerous in one day. Sold all the Piso's I had left to a fellow forum member who is a serious Piso's collector about a month or so ago. I had always pronounced it Peezoes while he pronounced it Piezoes. That was the first I had ever heard anybody pronounce it differently. Which is right? I don't know. Maybe it is really Pizzoes?
Hello All! Well I'm the serious Piso collector that Penn Digger referred to.
I don't know exactly why but I've always called them Pieso's myself.
Most folks including PD(Tom) call it peeso's.
Call them anything you want but if you have any nice colored Piso's to sell, please email or call ME. Thank you and good luck finding and acquiring bottles for your own collections. Best regards! Paul