Id say the 88 in good/fair condition I would guestimate to get about $1000 these days.
Some will say this is high, it is, but they are rare, you will likely only get a couple opportunities to buy one if your looking, and the next time one comes up it probably wont sell for less in the future.
Having said that, they aren't really attractive at that price, and may sit for a while, or disappear quickly to someone who wants one and knows how uncommon they are. You may see it go up for $850 and sell in a week or two, or maybe $1250. The $1K is just more of a baseline(ish) value. I would search the american gun auction site for values.