Nice set of knives.
If it were me, I'd do whatever I dang well wanted with them.
I'm no collector and not any self proclaimed expert on them but i am into several different hobbies that have a collectible side.
Personally, I get about sick and tired of hearing collectors go on and on about finishes, condition, patina etc. You know patina right? Ancient word for "wasn't taken care of". I think I'd go ahead and clean up a couple for personal use just to tick them off, but that's just me. The"purists" go on and on about original condition then half the time go ahead and do a restoration themselves (or payfor one) and end up bragging about how good it looks, how's much its worth and what a deal they got or how much they spent. Or even worse, take a perfectly useful Item that was meant to be used and that with care COULD be used for many years with little change in appearance and lock it away in a case never to see the light if day except when they take it out to show it off. I also don't understand why people love items that were used hard by a person 100 years ago but can't stand the idea of modern day use of that same item.
Cast iron, old wooden bows and guns are mainly the items I'm familiar with this happening. With all of those items, I use every single one I own as long as they are not broken. Like I said, I'm no knife expert and it sounds like there a few guys here who are and I mean no disrespect to them. It's just that I've usually found that there are quite often at least two sides to the collector story. There are collectors who want only original mint condition items, (usually these are the guys who like to brag about how much an item cost them), those who want to see age on an item and even some who like stuff that is mostly rust. And lastly those who just want items to use because they work well. Short of like the"living history" thing. That's fine. I just hate it when people get all bent out of shape because someone else doesn't see it the same way. And honestly, I just realized that by typing this post, I'm putting myself in that same category and pushing my opinion. Oh well, rather than delete all that, I'll leave it for Canon fodder.
My main point is that YOU get to decide what you do with them.
I think from what I read here, you've got some knowledgeable people trying to help you get the most money for your stuff but what about guys who just want to use something? What if a guy likes to tinker? Maybe he wants to customize an item for his own use? Yes the advice to not mess up those knives is valid IF ALL YOU CARE ABOUT IS MAKING MONEY WITH THEM. I think I'd be cleaning them up and giving them to my kids TO USE, maybe save a couple for the grand kids that will come along someday or even just for spares. You can always compromise, do some research to determine market value, then decide if the money matters more than having something that was your dad's. Who knows, if the value is high enough to the collector types, maybe you can keep all the ones you want for your self and laugh all the way to the bank about the rest.