Just an FYI for you that collect coins as well, the newly reverse redesign and obverse updates of American Silver Eagle goes on sale today. Product limit is at 300k and it won’t last long with only them allowing 3 per household (secondary pre-sales already listing them between $120 to $300). First time the design has changed since it was introduced in 1986.
Product Limit vs Mintage Limit
Mintage Limit is the max number made in a year and from a particular mint with mint mark. Product limit allows the mint to mint more that will be included in other ways like boxed sets, other sets, etc. Think of Product Limit as a ratio variant, only 300k will be available as a single standalone proof with case.