No, not the question Sonny asked about Luca's fish-filled vest, but...

I just noticed Don Vito holding this item in the scene where Michael becomes Don. I never noticed it before, and was wondering what it was? A transistor radio maybe? Interesting, because such radios were first commercially available November of 1954, which would fit the timeline. And who else would have one of those "new-fangled gadgets"?