I found a little confusion.
"Fine parchment" is not mentioned in the inventory.
In the Detailed Inventory it is mentioned, but it says that it is "expired".
However, that is not the case.
In...
I have reached the end of my search.
Discovered the difference of 280 RP
I forgot to count the Glimmergate.
Overview:
Glimmergate: 280
Troll pit: 450
Tablet of tabernum: 290
Forgotten...
I don't know where the 280 RP difference comes from,
but it certainly isn't from the Gnomish Mine.
I expanded there, and didn't get any extra RP.
You were right, ShibuyaCloth