Sunday, September 6, 2026 closes the three-day All C's Collectors Showcase at the Arapahoe County Fairgrounds Event Center in Aurora, and it falls on Labor Day weekend — meaning most attendees still have Monday off and nobody is watching the clock. That relaxed atmosphere changes how the room works. Dealers who spent Friday evening and Saturday moving product are settled in, conversations run longer, and the pressure that builds on a peak Saturday afternoon simply is not there. For collectors who find big shows exhausting, the final day of a 300-plus-table event is close to ideal.
The floor still carries substantial depth on Sunday. Sports card dealers stock MLB, NBA, NFL, NHL, UFC, boxing, and soccer across all eras: vintage 1950s and 1960s Topps and Bowman, 1970s and 1980s Topps, Fleer, and Donruss, 1990s insert and refractor product, and modern Panini Prizm, National Treasures, Donruss Optic, Select, Mosaic, Topps Chrome, and Bowman Draft. Colorado Rockies, Denver Broncos, Denver Nuggets, and Colorado Avalanche material is well stocked, and with the NFL season just underway, Broncos tables draw steady traffic. Trading card game vendors carry Pokemon from vintage Wizards of the Coast releases through current Scarlet and Violet plus Japanese-language sets, along with Magic: The Gathering, Yu-Gi-Oh!, One Piece, Disney Lorcana, Digimon, and Dragon Ball Z. Locked cases display PSA, BGS, SGC, and CGC graded slabs, and additional tables offer signed memorabilia, comics, Funko Pops, vintage toys, coins, and hobby supplies.
Sunday hours run 10:00 AM to 5:00 PM Mountain Time. Admission is free and children enter at no charge, so a family can spend a full holiday-weekend afternoon here without spending a dollar before reaching the first table.
The Arapahoe County Fairgrounds Event Center is in Aurora, easily reached from E-470 and Quincy Avenue, with abundant free on-site parking. The hall is single-level, climate-controlled, and ADA-accessible, with concessions available on site so you can eat without leaving.
Sunday is the day for negotiators and sellers. Dealers closing out a three-day run would rather convert inventory to cash than reload the van, and offers that got a firm no on Saturday often get a yes by mid-afternoon. If you are selling a collection or a few significant pieces, dealers who had a strong weekend arrive Sunday with cash and space in their cases. Set builders benefit from dealers newly willing to break up lots. Families and first-timers get thinner crowds and dealers with the patience to actually explain grading, population reports, and what makes one card worth ten times another.
Practical approach: arrive by 10:00 AM to revisit anything you flagged earlier in the weekend, and make specific offers rather than asking open-ended questions about price. The 3:00 PM to 5:00 PM window consistently produces the weekend's best pricing as dealers start weighing the drive home. Bring cash in mixed denominations, a want list with target numbers written down, penny sleeves, top loaders, and a sturdy box. Confirm final-day hours through the show's listings or Colorado collecting groups before making the trip.