Any help would be appreciated. I've never been to a bottle show and have never sold a bottle. I am putting some of my duplicates in my mother's antique booth to help her out. I just don't know what to ask. Don't want to ask too much or give them away. Money not for me.
Well, first you should clean them up a bit.. clean ones sell better, for some strange reason.. next, ask yourself, what's the dollar amount you will accept as appropriate compensation for your possessions.. a dollar? 3? 5 a piece? Then double that amount.. that is your asking price..They look like common ones, and crowns have a bad rap, having been so dang successful since their 1892 debut... hope this helps! 
I agree with starting the price high as Charlie stated. However, being a Yankee I think he forgets you Southerners love those crowntop & bottling works bottles much more than us snobs up North. I hope they are good ones for you.