Iron Buckler

Its lightness and curved center makes it excellent for deflecting attacks.
Overview

At quality 1, Iron buckler has 28 block armor and 200 durability. Upgrading it raises both values: quality 2 increases it to 34 block armor and 250 durability, while quality 3 reaches 40 block armor and 300 durability. The total crafting cost for the base shield is 10 Iron and 4 
Because it is a buckler, Iron buckler is best used when the player can reliably time blocks. Its lower size and focused defensive profile make it suited to parrying attacks and opening enemies up to counterattacks, especially before heavier late-game shield options become available. It is also a practical choice for characters using melee weapons that benefit from close-range reaction defense.
- Base crafting: 10 Iron, 4 Ancient bark
- Upgrade to quality 2: adds 5 Iron, 1 Ancient bark
- Upgrade to quality 3: adds 10 Iron, 2 Ancient bark
- Upgrade to quality 4 is not listed in the available data
- Block armor by quality: 28 / 34 / 40
- Durability by quality: 200 / 250 / 300
As a progression item, Iron buckler sits in the period where iron equipment becomes available and before more advanced defensive gear takes over. Its upgrade path makes a noticeable difference in both survivability and consistency, so improving it is worthwhile if the player plans to keep using buckler-style combat.
Official description
Its lightness and curved center makes it excellent for deflecting attacks.