The first real NFT collection deployed and minted after the Ethereum Merge to Proof of Stake.
MergePunks are a 'merger' of artist Darlene Pizarro's digital and abstract art styles. They may have also taken the 'Proof of Stake' component of the merge a bit literally.
The smart contract for MergePunks was deployed on Ethereum block #15537396 (the third PoS block) with the first 10 MergePunks minted during deployment. Gutter Punks holders were allowed one free mint during a 24 hour window after deployment and a total of 55 MergePunks were minted. No new MergePunks can ever be minted so the collection size is fixed at 55.