Both of the paperweights are Murano, from the glassmaking island in Venice, Italy.
The one you are extra curious about - the large one - is a very fine example of a larger Murano with millefiori canes, ribbons, and latticino. It's a high-domed scramble or end-of-day paperweight. If, as it seems, there are no scratches or gouges or bulls-eye bruises, you've got a piece worth about $25 to $50 depending on who's doing the buying and where you attempt to sell it. If you list it on eBay at $24.99 (to avoid going into the next fee level), you should do nicely with it. although the bidding might not be lively at that price. Of course, if you list it at $9.99 (to avoid going to the next fee level), there could be a bidding war that might go past $25 and maybe hit $50 or higher.
Both of your paperweights are made by the Fratelli Toso fornace (furnace) on Murano. The millefiori in both weights are very typical of Fratelli Toso's work, which are, more often than not, large, almost chalky-looking canes, with bright vibrant colors, concentrating especially in vivid blues, pinks, and greens. While applying an exact year to manufacture is difficult, these weights were both made in the 1970s, when numerous Murano paperweights werre exported to the U.S. and the U.K.
90% of the time, Murano paperweights will have a clear, smooth, finished bottom. You have to be vary wary of cheesy Chinese fakes that some dealers call Murano. However, you have no worry here. These are both very nice examples of Murano and there is a market for them. Start the auction at a fair price and watch the bidding.