I didn't get any good external silver swirls in a whole case, so I had to buy a couple of special ones separate from my case. Bummer, but that's ok. The silver swirls with lutz swirls are truly rare I guess. I was able to obtain 2 examples with the silver bits on the inside of the marble (not confettis) and one of them also has a nice internal lutz swirl. That being said, my favorites are some of those simpler transparent ones from this run. I love the lutz swirls and hate the confettis, but still want examples of all the different confetti combinations. Internal lutz swirls are still so cool...and extremely rare in this run.