Third-age full helmet

The Third-age full helmet is a members-only piece of armour that is part of the Third age warrior set. To wear the helmet the player needs at least 65 Defence. To obtain a third age full helmet the player can either complete a Level 3 Treasure trail, trade with another player, or buy in the Grand Exchange.

It used to be the best non-degrading defensive helmet in the game until the release of Bandos helmet. Many players prefer a Helm of neitiznot for the prayer bonus or barrows helmets for defence (although those degrade in combat) over the third-age full helmet, as they are much cheaper.

It was long thought that the chances of obtaining a piece of third-age armour was of about 1 in 10,000 (according to Paul Gower), and in 2010 Mod Maylea stated that the odds are lower than 1 in 100,000. However, a livestream with Mod Simon and James revealed the mechanics of Treasure Trail rewards in detail, meaning the actual chances could be calculated: approximately 1 in 16,896 per item roll for any of the 12 parts of third-age equipment, or approximately 1 in 202,752 for a specific part, per item roll - with an average of 5 item rewards per Trail, this gives approximately 1 in 3,380 for any part, or 1 in 40,551 for a specific part, per Trail completed. For a more detailed breakdown of drop mechanics and calculations, see Treasure Trails/Rewards.

Trivia

 * When the dragon full helm first came out, its stats beat the third-age full helmet's original stats in each section. Jagex then updated the 3rd age full helmet, which is now slightly stronger than the dragon full helm.
 * The Third Age full helmet closely resembles Ancient Greek Corinthian helmets. The only difference is that these helmets do not have the horsehair plume.