I’m a journalist writing an article on collectibles Americans should inspect before donating, discarding, or selling for very little in 2027. I’m seeking U.S.-based appraisers, auction-house specialists, antique dealers, numismatists, and experienced collectors who can offer practical, realistic guidance. 1. What collectible categories are most likely to be accidentally donated, discarded, or underpriced? 2. Which items should people pause to research before selling them at a yard sale or donating them to a thrift store? 3. What features can make a common-looking item more valuable, such as a maker’s mark, limited production run, condition, or original packaging? 4. Are there particular toys, coins, trading cards, books, advertising items, jewelry, or holiday decorations worth checking? 5. What condition issues can sharply reduce value, and what imperfections may matter less than sellers expect? 6. What details should someone photograph or record before requesting an appraisal or listing an item for sale? 7. What are the biggest mistakes people make when using online sold listings to estimate value? 8. When does it make sense to get a professional appraisal rather than sell an item independently? 9. What scams or misleading claims should first-time sellers watch for? 10. Do you have anything more to add?