The following will turn into Marks:
Skirmish Marks
Recruit's Mark
Footman's Mark
Veteran Footman's Mark
Esquire's Mark
Veteran Esquire's Mark
Guardsman's Mark
Veteran Guardsman's Mark
Sergeant-at-Arms Mark
Veteran Sergeant-at-Arms Mark
Arnorian Armour Fragment
Battered Arnorian Armour
The following will turn into Medallions:
Eruilan Campaign Mark
Adlan Campaign Mark
Naillan Campaign Mark
Cannuilan Campaign Mark
Lefnuilan Campaign Mark
Enguilan Campaign Mark
Odothuilan Campaign Mark
Ann?minas Mark
Eregion Mark
Helegrod Mark
Great Barrow Mark
Inn of the Forsaken Mark
Halls of Night Mark
Veteran's Fourth Mark
Fourth Mark
Superior Third Mark
Veteran's Third Mark
Third Mark
Veteran's Second Mark
Second Mark
Veteran's First Mark
First Mark
Broken Arnorian Pauldrons
Broken Arnorian Shirt
Broken Arnorian Leggings
Thorog's Fang
Thorog's Claw
Thorog's Horn
Scrap of Storv?g?n's Armour
Zaudru's Stinger
Amulet of the Witch-King
And then there is the Superior Fourth Mark:
Instead of automatically converting, you will be able to bring your Superior Fourth Marks to the Skirmish Camp and exchange them for EITHER Medallions or Seals.
Marks
Marks replace Skirmish Marks in many ways. They are primarily gained from Skirmishes, though a decent amount will appear in Classic instances. All Skirmish traits will now cost Marks to upgrade. Much like before, Marks can purchase the widest variety of items from the Skirmish vendors, though more potent rewards will often cost some Medallions or Seals in addition.
Marks are acquired at different rates than Skirmish Marks were, so barter vendor prices were similarly changed. The new prices reflect the adjusted acquisition rates of the new currencies, so the net time it takes to acquire rewards should not change by much. We've aimed to make the net acquisition times for rewards the same as it was, or lower.
Drop rates:
High - Skirmishes
Moderate - Scaled Instances
Medallions
Medallions are found from a variety of sources. They take the functional place of Campaign marks, Instance marks and the "level band" marks (First, Second, Third, Fourth mark). More potent rewards will cost some amount of Medallions in addition to Marks, much as they currently cost Marks and the some kind of special token (Veteran's Third Marks, Great Barrow Marks, Cannuilan Campaign Marks, etc.) They are awarded primarily for completing Encounters while in Skirmishes, from beating bosses in Classic and playing in the new Isengard cluster.
Drop rates:
Low - Skirmishes (primarily Encounters)
Moderate - Scaled Instances
High - Isengard Instance Cluster
Seals
Seals are the top end, rarest currency. In value, they are somewhere between "Superior" marks and the endgame instance currencies (like the Medallions of the North-men.) They will appear primarily in the endgame instance cluster, but some can be found completing challenge quests in Classic instance or the Raid quests in Skirmishes and Draigoch. Seals are the currency for purchasing the new Raid sets, as well as other high end items. In addition, there will be some items that have a second price point that includes Seals.
Drop rates:
Low - Scaled Instance Challenge quests (size 6 and higher)
Moderate - Skirmish and Scaled Instance weekly Raid quests
High - Isengard Instance Cluster bi-weekly quests (all sizes)
https://www.lotro.com/gameinfo/devdia...eveloper-diary