Notes:
Prior to 1999, the only Pacific Company $1 coins were silver versions, including (but not limited to) a unique uniface obverse striking on a 1776 Spanish Real, and a unique example struck over a U.S. Half Dime.  In June 1999, Jerald Reinford of New Bethlehem, Pennsylvania discovered a gold Pacific Company $1 while treasure hunting with a recently purchased metal detector.  The coin Reinford found has solder remnants at the top and bottom of the reverse.

Known examples (2):
"Net EF-45".  Ex - Ben Green's auction of August 1910 - Virgil Brand - possibly offered in J.C. Morgenthau's 1933 sale, but later returned to the Brand family - Auctions by Bowers and Merena Inc. "Virgil Brand", June 1984, Lot 1545 - Jay Roe - Bowers and Merena Galleries "The Rarities Sale", July 31, 2002, Lot 943, "...Pattern or trial striking in silver or related alloy, gilt.  Kagin-1.  sharpness of AU-50, lightly cleaned...Reeded edge...", illustrated, sold for $50,600.00 - Stu Levine.  Later testing revealed this piece to be gold, not gilt, making it only the second gold example known of this type!

"Net Fine-12".  Discovered by Jerald Reinford in June 1999 - Bowers and Merena Galleries "The Paul S. Mory, Sr. Collection" auction, June 22-23, 2000, Lot 1041, illustrated

Sources and/or recommended reading:
"Rare find makes top lot" by Ray Sidman, Numismatic News, May 2, 2000, pages 1 and 92