The main competitor to the Garand rifle in the 1930s was John Pedersen’s toggle-locked rifle. The Pedersen was designed to fire, appropriately, the .276 Pedersen cartridge developed just for it, and it used an en bloc clip similar to what was eventually adopted with the Garand. The .276 round was smaller than .30-06, though, and a similar sized clip would hold 10 rounds instead of 8. We ran across an original Pedersen clip, and took some photos:
Specifically, this is a Vickers-production reversible clip for the production PA Pedersen rifles. We have photos from all sides, and you can see them all on the Pedersen page in the Vault.