Typewriter Smith Corona best classic 12

Product Name: Typewriter Smith Corona best classic 12
This type writer is in excellent condition and is very clean there is some light dust between the keys but looks like most of this typewriters life was spent closed and in a low dust environment. The machine itself looks very lightly used. All keys work and all the levers buttons switches on this machine are best working. I typed on a paper and pushed every key to show they still print on paper. I'm unable to remove the typewriter from its case so can't provide pictures of the bottom. If someone can message me on how to remove the typewriter from the case I'd appreciate it.