Clean Gold Fingers according to boardsort.com

Clean Gold Fingers are trimmed from Gold Finger Cards and Gold Fingered RAM only. The fingers must be trimmed all the way to the gold with minimal board showing. If you are trimming gold pieces from boards other than Finger Cards or RAM, those pieces will not qualify.
Warning: Trimming gold from finger cards and/or RAM will ultimately lose you money. The value of the trimmed gold finger and the now devalued trimmed finger card does not add up to the value of the finger card before trimming. The same applies to RAM. Keep the cards and RAM whole.