It is a small desk clock that looks like a promotional item for Famous Monsters of Filmland magazine. Forry added a photo of Vincent into it. Looks like it might have been a picture he snapped himself.
Here is what Robert has to say about it...
I was messing around in the movie room and found that I had forgotten this Vinnie-related piece. This is a little quartz "desk clock" from the Ackermansion. It has a space for a photo, and Forry chose to make it a Vinnie clock! I was so tickled when I acquired this with a group of other small items of Forry's. As Forry referred to himself as "The Poor Man's Vincent Price", finding this little Vinnie tribute made me all the happier.