In addition to faring well in Internet sales during the month of May, CAC-approved coins outperformed other certified coins in auctions in New Orleans and Baltimore. Here are 10 examples which were selected from a large number of results that could have been listed.

1864 two-cent piece MS-64 RD CAC OH. Hover to zoom.
- On May 5, GreatCollections sold an MS-64 1864 “Large Motto” two-cent piece with a designation that this coin has full original mint red color “RD,” for $757.12. This coin has a sticker of approval from CAC. On March 19, 2019, Heritage sold an “MS-64RD” 1864 “Large Motto” two-cent piece without a CAC sticker for $408. Back on October 23, 2018, Heritage sold an “MS-64RD” 1864 “Large Motto” two-cent piece without a CAC sticker for this same price, $408. This non-CAC 1864 was in a holder that is extremely similar to the holder that houses the CAC-approved coin that GreatCollections sold for $757.12 on May 5. Also, at the end of March 2019, Kagin’s auctioned an MS-64RD 1864 “Large Motto” two-cent piece without a CAC sticker for $480.

1920-S Mercury dime MS-65 FB CAC.
- On May 5, GreatCollections sold a CAC-approved MS-65 1920-S Mercury dime, with a “Full Bands” (“FB”) designation for $4,050. In August 2018 at an ANA Convention, Stack’s Bowers auctioned an MS-65 1920-S dime with a “Full Bands” (“FB”) designation, but without a CAC sticker, for $3,120. That non-CAC dime has a rather famous pedigree from the collection of John Whitney Walter. In June 2018, at a Long Beach Expo, Heritage auctioned an MS-65FB 1920-S dime without a CAC sticker “from the Bob Williams Collection,” for $3,360. In April 2018, at a CSNS Convention, Heritage sold a different MS-65FB 1920-S dime without a CAC sticker for $3,600. The CAC-approved “MS-65FB” 1920 dime brought substantially more than the others despite the reality that others were from named collections or auctioned at major coin conventions.

1855 Seated Liberty quarter Arrows MS-67 CAC (Toned).
- There are two MS-67 1855 quarters. Only one has been approved at CAC. On May 5, GreatCollections sold the CAC-approved MS-67 1855 for $49,500. The MS-67 1855 quarter without a CAC sticker was auctioned by Heritage in 2016 for $36,425, and in 2015, while in a different holder, for $27,025. This coin was in the Gene Gardner Collection. Market values for Liberty Seated coins have not risen since 2016, so the CAC-approved coin realized much more.

1908 Barber half dollar MS-66 CAC (Price Collection).
- On May 5, GreatCollections sold a CAC-approved MS-66 1908 half dollar for $9,853.88. At the Summer FUN Convention in July 2018, Heritage auctioned an MS-66 1908 half dollar without a CAC sticker for $3,480. That same non-CAC 1908 half had been auctioned for $4,080 in March 2018.

1901 Liberty Gold Eagle MS-64 CAC.
- On May 5, GreatCollections sold an MS-64 1901 $10 gold coin, with a CAC sticker, for $1,181.25. This amount is much greater than the amounts that MS-64 or “MS-64+” 1901 $10 gold coins without CAC stickers, have been realizing in public sales. On April 28, Heritage sold an MS-64 1901 for $960. On March 20, Stack’s Bowers sold an “MS-64+” 1901 for $930. On March 5 Stack’s Bowers sold an MS-64 1901 for $900. Prices for these have been trending downward in 2019. The lone CAC-approved MS-64 1901 $10 sold in 2019 was the most recently sold of all those just mentioned, and it brought significantly more than the non-CAC coins realized when market levels were higher.

1921-D Morgan. MS-66+ CAC.
- On May 16, Legend auctioned a CAC-approved MS-67 1921-D Morgan silver dollar for $31,725. This same coin reportedly realized $30,550 in another Legend auction on October 15, 2015. The last non-CAC, MS-67 1921-D Morgan to sell at auction realized $11,750 at the FUN Convention in January 2016. Another MS-67 1921-D Morgan without a CAC sticker was auctioned by Stack’s Bowers in February 2014 for $22,325.

1923-S Peace silver dollar. MS-65.
- On May 16, Legend auctioned a CAC-approved MS-65 1923-S Peace silver dollar for $6,168.75. On March 1, Stack’s Bowers sold an MS-65 1923-S silver dollar without a CAC sticker for $1,320. On February 3, Heritage sold two MS-65 1923-S silver dollars, each without a CAC sticker. The one in a holder that is more than 15 years old realized $2,640, while the MS-65 1923-S dollar in a relatively recent holder went for $1,440.

1925-S Peace silver dollar. MS-65.
- On May 16, Legend auctioned a CAC-approved MS-65 1925-S Peace silver dollar for $36,425. On February 28, 2019, Stack’s Bowers auctioned an MS-65 1925-S without a CAC sticker for $24,000. A different MS-65 1925-S Peace dollar without a CAC sticker was auctioned at the ANA convention last August for $18,000.

1893-CC Liberty Head half eagle. MS-61. CAC.
- On May 23, Stack’s Bowers auctioned a CAC-approved MS-61 1893-CC $5 gold coin for $3,840. In December 2018, Heritage auctioned an MS-61 1893-CC $5 gold coin without a CAC sticker for $2,640. In 2017, Heritage sold non-CAC, MS-61 1893-CC $5 gold coins for $3,290 in June and for $2,585 in April.

1850-O Liberty Head double eagle. Winter-1. EF-45. CAC.
- On May 23, Stack’s Bowers auctioned a CAC-approved EF-45 grade 1850-O $20 gold coin for $13,800. On February 28, Stack’s Bowers auctioned two other EF-45 1850-O $20 gold coins, neither of which had a CAC sticker. One of the non-CAC coins realized $7,200. The other was from the same consignment as the just mentioned CAC-approved EF-45 grade 1850-O that realized $13,800 on May 23. This non-CAC counterpart was also from “The Fairmont Collection,” and is similar in color. This non-CAC, PCGS graded EF-45 1850-O sold for $9,000.
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How can you say that the CAC sticker was the factor in the price increases?
What about eye appeal?
And the number of bidders looking for that paticular coin? Time of year auctioned? How it was promoted before and during the auction?
There are multiple factors involved on many different levels for auction pricing?