These may have been made by Sedesma, a company in Spain. Ask the person if they say "Sedesma" on the back. If the answer is yes, they are tradeable with the CMs, but some of them won't like it.
I have seen those pins on eBay before and have always shyed away from purchasing them. I know they are very inexpensive but it's not worth it if you can't trade them. When I was at WDW in October it was not easy to trade the Sedesma pins. Several CM's gave me a hard time and I was told they would sooon stop trading them. I won't buy anymore because it's just not worth the hassle.
I have seen those pins on eBay before and have always shyed away from purchasing them. I know they are very inexpensive but it's not worth it if you can't trade them. When I was at WDW in October it was not easy to trade the Sedesma pins. Several CM's gave me a hard time and I was told they would sooon stop trading them. I won't buy anymore because it's just not worth the hassle.