Your machine is gorgeous. What a great find. I love the decals on her.
I bought a treadle a while back and took it to my 83 yr old dad who went over the machine, nothing wrong with it, and refinished the cabinet. Someone had stained it an ugly antique green. Now it's back to the beautiful brown stained it's supposed to be. The side drawers have locks but no keys. I wasn't worried about it. He made me a key. He is a mechanic by trade and has always worked with his hands so I don't really find this amazing but I was surprised that he went to the extra work to make a key for this machine. Have anyone like this who lives close to you? Maybe they could make you a key. As you can see from the pic it's not difficult. You just have to have the proper equipment.