Things to check:
green item nerfs
*The prenerf greens
First thing first the prenerf greens aren't a unified category, they result from many different updates along the years. There are 3 big categories:
1) Some greens were updated and all the existing one were retroactively changed : Rockmolder, Shiro Blade, Hassin's Shell etc.. As they don’t exist anymore, there is not really any point in listing the updates. For the people interested you can find the full list in the thread dedicated to the PN greens.
2) Some greens were the subject of individual updates and their prenerf version are still in the game :
- Wroth Holy Rod : already listed nothing to add here
- The Wayward wands : they were updated the 24th April 2008. The combo DF/heal, DF/prot, Domi/inspi Illu/inspi and SP/Resto were removed from the collector and 6 new wands with matching req and HSR were added : Heal, Prot, Inspi, Soul reaping, Fast cast and Energy Storage.
- Faith. This WoC staff initially dropped without its inherent HSR. It was most likely fixed during the 9 th February 2012 update (undocumented). This update also retroactively corrected another WoC green (Pheonix retribution) and it makes sense that faith was fixed as well. A comment on the wiki discussion page also states: Fixed by the looks of it, at least for new drops. Got one last night without the HSR (which still doesn't have it), and another one today with it.C0Zm1c 10:54, 10 February 2012 (UTC) »
- Stone herder flat bow. This one isn't really a prenerf but i will still include it here. The bow was added in the game file with all the other SF greens but it was bugged and started dropping only 18 months later, after the June 2007 update
3) And finally the greens that were affected by the color update and the HSR update :
The color update : On most of the green from Proph and Factions we can notice some difference in color between the current greens and the old greens. Most of the time the prenerf color is lighter/more vibrant and the current version is darker/duller.
Our best guess is that update happened during one of the small update preceding NF release. The 22th september 2006 update (NF world Preview event) is a very likely candidate.
The Staff HSR update : the 25th October 2006 all the existing green staves were updated and changed from a local 20% HSR to a global 20% HSR.
> Some of the low level staves : Sahan’s Staff and Ziinjuu's Sanctuarywere weren’t affected by the retroactive update (maybe Anet just forgot about them ?), the old staves still exist and still have their local HSR.
> This update also had another unintentional effect : it changed the mod order of the affected staves. All the staves that were modded : Staff wrap -> Staff head were changed to be modded Staff head -> Staff wrap.
A note on the order of update :
The vast majority of prenref staves have both a prenerf color and prenerf stats but a small percentage of them (something like 5% or so) have prenerf stats but are using the current color. This show that the color update happened before the Staff HSR update. The fact this happen on a very small % of staff show that the 2 updates were relatively close in time.
With our current timeline (color update during the NF preview and HSR update at the NF release) the interval would be about 1 month.