lots of people know lots more about it than you and me both, and, they will sometimes(all too often) take every advantage of that fact
Your best option is to type those names and numbers into a google search and see for yourself what they are asking/selling them for.
Ebay completed listings are the best, although not the only, gauge of this. You will likely find your best offers by simply placing them on a well thought out, and planned, series of ebay auctions. The more listings you place with this type of item, the more regular "watchers" you will notice, and with that point in mind, you might wish to start with what you've found to be the "lesser" of your items, gradually working your way up to the best of them over time, after you've begun to build a "following" of your auctions
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