Based on word of mouth of those who aren't in this full time (very casual shooter/collector) a Delgrego restored Parker was considered the "Gold Standard" for many years.
However, to the hard core collector Delgrego didn't do it right and his restorations (restocks and redone case colors) weren't close to what factory Parkers looked like. However they had the Delgrego stamp of approval on them and many folks were willing to pay for that stamp.
Currently I'd say Turnbull does the best job of making Parkers (and Foxes) look more period correct then Delgrego does and I think for many folks they would rather have a Turnbull restored gun then a Delgrego restored gun.
That said, hard core collectors would rather have an original gun with 30% case colors unrestored then have it redone by anyone and that includes either Delgrego or Turnbull.
The reality is at at some point the two values meet. A restored Delgrego/Turnbull at some point will hit the value of a unrestored gun in a certain original condition. The question is what is that point where restoration adds value as compared to an unrestored gun and who restoration is valued the most. Guess the market dictates what that restoration value is.
Last edited by tut; 06/22/16 07:22 PM.