Yeah, I'd hang onto them (choice 1 since they belonged to your father) or get in touch with a serious collector who will pay properly for them. DO NOT go through a secondary custom site, since they will take a fat chunk and generally they are vultures.
If you were going to sell, I would suggest listing here or that other place, after doing some research on what you might expect to get for them.
What kind of is the other bittersweet part is they are incredibly rare which makes them cool to own, but completely impractical (at least to me) for carrying.