Future Addition to my Collection

I have collection of several old coins that date back in the early 60’s which were my Mom’s collections too when she was younger. She gave me a few when I was 12 years old and I started my own collection too. I always keep some of the old coins when government replaced them with new and that constitute most of my collected silver and gold coins. Now I have some of international coins too from my friends who work abroad but I want to have those silver dollars I browsed online. Since they dated back from year 1878 it would really be nice for my coin collections. Anyway I have to save money for them as they’re not my basic essentials but I’ll just keep them in mind for future purchasing.