1957 Motorola restore

[triggerman]

Newbi here. I recently went to San Antonio TX to pick up this old TV my wife watched as a child and want to restore it, so I have a couple of questions that I hope can be answered. The picture tube has been smashed in the back , I am wondering where I might find another one. I took off the back panel and it says Zenith, so did they put Zenith picture in Motorola televisions? Also I would like to find new or at least better looking knobs for this one. I have posted pics below. Any help would be greatly appreciated. Thank you.