Need Help with Maker's Mark on Spoon J and G in Shield with

[Jgonch]

The hallmark is a "J" in a Shield and a "G" in a Shield and a Crown symbol in the middle. I need help to identify the maker of this spoon. Please click on the picture links below. Thank you.

JG_Spoon5.jpg (65 KB)

JG_Spoon3.jpg (286 KB)

[2209patrick]

Hello.

The marks represent the "Jeweler"s Crown Guild".
Don't think it was used much after 1904.
This mark is listed in Dorothy Rainwater's book under the Rockford Silver Plate Company.
Check here for the silverplate version of the Jeweler's Crown Guild mark:
http://www.925-1000.com/silverplate_R.html

Pat.