Bulova 1956 Dolly Madison

Hello everyone, Here's another addition to my collection. I've searched everywhere and every ads trying to identify this beauty, but unsuccessfully. If you can help me that would be great 😊 (I didn't chose the proper case on purpose so you can put the correct one, I'm not very good at recognising them). Unfortunately I've no idea about its history, but if it's of any help it had a silver cord bracelet, not sure if it can be helpful.     Thanks in advance for your help