Here are some info and tips regarding coins/notes collecting.
COIN
1. The Maria Theresa Thaler 1780 [link]
2.
STORAGE
Coin
# Store coins individually in a holder. Do not stack coins on each other.
# Keep coins in clear acid- and PVC-free holders.
Banknote
# Use Mylar or vinyl holders which is acid-free and contain no harmful chemicals.
# Keep away from direct sunlight to avoid fading.
# Store in a cool, dry place and away from excessive heat and humidity.
HANDLING
Coin
# Keep away from direct sunlight to avoid fading.
# Store in a cool, dry place and away from excessive heat and humidity.
HANDLING
Coin
GRADING
Coin [link]
Coin Grading Services
1. Professional Coin Grading Service (PCGS) [link]
2. Numismatic Guaranty Corporation (NGC) [link]
3. Independent Coin Graders (ICG) [link]
4. American Numismatic Association Certification Service (ANACS) [link]
5. Coin Grading Services UK (CGS) [link]
Banknote [link]
Banknote Grading Services
1. Paper Money Grading (PMG) [link]
2. PCGS Currency [link]
3. Banknote Certification Service (BCS) [link]
4. Currency Grading & Authentication (CGA) [link]
2. Glossary of Numismatics [link]