Electa Model No. WA-1R

I have this Electa electric/acoustic guitar model WA-1R. I have no idea of the history of it, but I still play it and it sounds good. It's slim bodied and slim neck like an electric guitar. It's in good condition except the white bridge that holds the strings firmly from the pin then towards the neck it has a slight hairline crack.
I was wondering would it be a good idea to replace that bridge or should I leave it the way it is because of value?

I tried on Google and searched for the same model but it seem I can't find it.
Can anyone tell me if they've ever heard of this model WA-1R made in Japan?
I'd love to hear more about and it's history, if there's anyone who knows the price of it these days?