I don't mean by mintages, but I mean by what typically comes available in the secondary market. Is it the:
1. 2007 S$1 Wedding Silver Dollar
2. 2007 S$1 Baby Rattle Gilt Silver Dollar
3. 2007 S$1 Baby Rattle Silver Dollar
4. 2007 S$1 Celebration of the Arts Silver Dollar
5. 2007 S$1 ABC Building Blocks Silver Dollar
6. 2007 S$20 Blue Crystal Snowflake
7. 2007 S$20 Blue Plasma Polar Year
What are your thoughts and rank on the rarest of these coins? I am looking to start investing in the rarest ones.