Welcome, It looks like you have a nice mix of vintage marbles. In general, marbles with more colors are more desirable than those with fewer colors. Although, some marbles have value even if there are only one or two colors. Size is important too. But condition is probably the most important thing to collectors. Like any other glassware, small chips and scratches can have a very significant impact on the value of a collectible marble. That said, good pictures are key to determining a marble's value. So if you want good advice, you will have to post only a few marbles at a time and show multiple views of each marble. That done, people here will be more than happy to help you, because we love looking at marbles. A few are already capturing my attention and I looking forward to seeing what you have.