The independent catalogue of Bulgarian coins · 486 coins documented
Spot Gold 3 706 € Silver 50.70 € Platinum 1 469 € /ozType at least 2 letters. Try “Rila”, “1981”, “gold” or “Iconography”.
BulgarianCoins editorial
How to clean and care for your coins: milk spots, toning, PVC, copper and bronze – what helps and what destroys value.
Care and cleaning
What “milk spots” are, whether they harm the value, and what you can – and must not – do
White milk spots on BNB silver coins: what causes them, whether the coin loses value, which removal methods are safe and how to protect a collection.
· 5 min read · BulgarianCoins editorial team
Care and cleaning
Why copper and bronze are the most sensitive metals in a collection, how to recognise bronze disease (powdery light-green spots), and what to do: isolate, dry, and get specialist help for valuable pieces.
· 3 min read
Care and cleaning
An honest review of home remedies for cleaning coins, from the safe (distilled water, pure acetone) to the destructive (baking soda, lemon, toothpaste, silver dip).
· 3 min read
Care and cleaning
Why fingerprints damage coins, when to wear gloves, how to hold a coin by its edge and how to work safely over a soft surface – a practical guide for Bulgarian collectors.
· 3 min read
Care and cleaning
Five checks for spotting a cleaned or polished coin at a fair or from photos: luster, hairlines, colour, deposits in the recesses and the edge – with typical cases among Bulgarian silver coins.
· 3 min read
Care and cleaning
Toning, spots, green and black deposits on Bulgarian coins: which colours are natural, which are damage, what a collector can safely do and when restoration does more harm than good.
· 3 min read
Care and cleaning
How to tell attractive natural toning from spots, corrosion and artificial toning on silver and copper Bulgarian coins, and why collectors often pay more for an untouched patina.
· 3 min read
Care and cleaning
Polishing, baking soda, toothpaste and silver dips remove metal and leave hairline scratches. Why a cleaned Bulgarian silver coin can be worth a fraction of an untouched one, with examples.
· 3 min read
Care and cleaning
Where the green, sticky film on coins comes from, why PVC damage is permanent if left alone, and the step-by-step acetone method that removes it without touching the metal.
· 3 min read
Care and cleaning
Why almost every attempt to clean a coin lowers its value, what collectors and dealers look for, and the few cases where careful cleaning is justified.
· 3 min read
