Sure, old slabs. Check this out: https://www.pcgs.com/holders Gen 4.5 (2011/12) and newer holders all have prongs...
I much prefer the look of PCGS slabs, especially the newest 2 generations. The second to last one is my favorite, with the high tech square hologram with the 4 number security device. The plastic seems more sturdy than the current version. That brings me to my next point, that NGC slabs are less stressful to handle because they don’t crack or break easily. PCGS plastic is clearer but seems to crack at the slightest impact. With all of that in mind, my conclusion is that the best slabs are the ones with the nicest coins in them