Depends what ya want to do with it... look at it or actually RC it... there are a few out there. What would Studio Scale be on this?
Studio scale would be 8-1/2 foot as this was the work-horse model for the run of the series. There were smaller scale models that showed up in the first season, the so called aquarium models.
One source of a high quality static model is Paul Lubliner's proposed 24" TV version seaview. Not available yet..............but on the drawing board.
BTW, Paul is the number one Seaview expert and occasionaly posts on the hobbytalk board. If you can find a copy on ebay, an excellent source on the studio models is the old fanzine Seaview Soundings #3.