The Sunshine Minting Walking Liberty Silver round is designed very similarly to Silver Eagles produced by the US Mint.
While investors usually pay a premium for US Silver Eagles, and the beautiful design & finish associated with them, these rounds from Sunshine Minting have a similar design & finish for a much lower premium than legal tender coins.
The reverse features Sunshine Mints mintmark security feature. The middle of the SMI Mint Mark SI security feature is not visible to the naked eye, although when viewed through the unique decoding lens, the security feature becomes visible.