A lot of coins were issued during the period of Ukrainian independence. They were constantly re-minted and therefore have many minor differences. That is why not only commemorative and commemorative coins are of great interest among collectors, but also ordinary everyday “trifles” with their differences. Some everyday coins were minted in small quantities, made of aluminum - these are the most valuable items among collectors. Test coins (for example, 15 kopecks) were also issued from various alloys, which never came into use. They are also of considerable interest.