Polaris cardboard sub

Hi,

I have one of these cool subs in the original box! I am trying to find out as much info as I can on it.

I believe it was sold in comic books in the 1960s?

I haven't decided if I am going to keep it or sell it but any info would be great. is eBay the best place if I do put it up for sale. I hope it is ok to ask for this type of advice here.

I'm happy to share photos of i have of it if anyone is interested.

thanks

Maria