First published by Money Metals here: https://www.moneymetals.com/news/2016/09/06/dangerous-sidelines-000920

A year ago at this time, it was hard for investors to find available inventory for the most popular silver products – as well as some gold coins. Premiums for the silver American Eagle reached nearly $6.00 per coin. Mints and refiners couldn’t keep up with demand, and long lead times became par for the course across the silver product line.