Enamel pins are a handmade product and as such flaws can happen. Little inconsistencies such as tiny bubbles, bumps, scratches, in-correct or missing fill can occur.
1st - Near to Perfect with minimal to no flaws.
2nds - Obvious flaws but not a hindrance to use.
Disclaimer : These enamel pins and designs are purely fanart. I in no way claim ownership of any intellectual property that these products may take inspiration from. These products are not official merch or claim to be official merch of any intellectual property.