$RARE If you're interested in recent breakthroughs in rare coins, there are a few areas where significant developments are occurring:

1. **New Discoveries**: Rare coins from historically significant periods or regions are occasionally uncovered, which can cause a stir in numismatic circles. For example, recent discoveries of ancient Roman or Byzantine coins can lead to new insights into historical trade and culture.

2. **High-Grade Examples**: Coins that achieve high grades in terms of condition, such as those graded as MS-70 by professional grading services, often fetch high premiums and are considered breakthroughs in terms of rarity.

3. **Technological Advances**: Advances in technology, such as improved imaging and analysis techniques, are allowing for better identification and verification of rare coins, enhancing their appeal and value.

4. **Market Trends**: Changes in collector interest or investment trends can sometimes lead to previously undervalued coins becoming highly sought after. For example, coins with unique historical associations or errors may become breakthroughs in terms of value.

If you have specific coins or types in mind, I can provide more detailed information.