No, this is simply a part 2, hence the smaller scale that you note. There was a part 1 that was significantly bigger in scope:
https://auctions.stacksbowers.com/auctions/3-18DWT2/spring-2024-auction-session-9-physical-cryptocurrency-part-1-lots-8001-8137?limit=96The Stack's website just seems very poorly designed and buggy, hence the confusion here. I actually can't find a link to part 1 anywhere on their website -- the link I posted came from my browser history. Before part 1 ended, you used to be able to access it via their
Cryptocurrency Auctions page under the "March 28, 2024" "The Spring 2024 Showcase Auction" row, but that row now instead redirects to part 2 rather than part 1. And before part 1 ended, it wasn't even clear there would be a part 2.
Part 2 appears to have 96 lots with very few high-value items: the biggest is a single 0.1 BTC coin. This auction seems like it is internet only and ends April 2 ("Spring 2024 Auction - Session 13 - Internet Only - Physical Cryptocurrency Part 2 - Lots 12001-12099"), though there is contradictory information ("Live Bidding begins Apr 2, 2024 @ 10:00 AM PDT").
Part 1 had 136 lots with far more high-value items, including multiple Cas coins like a
5 BTC Bitnickel and a
1 BTC silver gilt sourced from Jimmy Song. This auction ended March 28 and was called "Spring 2024 Auction - Session 9 - Physical Cryptocurrency Part 1 - Lots 8001-8137".