Hello @Moth and welcome to Numista. Thank you also for bringing this to our attention. Since the $1 and $2 pieces are struck in sterling silver, they will need to have new pages created rather than adding separate lines on the existing aluminium-bronze listing. You can add the coins yourself by clicking on the
Add it yourself! link either here or at the bottom of any country catalogue listing or if you are unsure about how, you could PM me some high res pics of both sides of each coin and I can create the pages for you.
Just because you can't see it ... doesn't mean it isn't there - Anon.
Former coin and banknote catalogue referee.