A friend brought me two ashtrays he wants me to list on Ebays, but I know absolutely nothing about Ashtrays, so am hopeful someone on here can help. They are 3 5/8" in diameter, and a dark brown, almost black, glass, not see through. One is from the Holiday Casino In Vegas, and features The words Holiday Casino and a picture of the hotel and casino on the sides in white, (wrapping around the whole Ashtray sides) and the other is in Yellow and is from the Golden Nugget, and features the Golden Nugget logo over and over again. Do these have any form of value(are they worth listing on Ebays?) and what is a fair asking price for them? I am still trying to figure out how to get decent scans or pictures of them. Any help appreciated. Thanks!

Mike