I've spent considerable time on
ebay lately searching for varieties and gems for my collection. In case any coin sellers visit here to assess the pulse of the coin collecting community, I offer this advice to get the most from your auctions:
Hype - According to many sellers, every coin in the series is Key, Semi-Key, or Rare. You insult most of your informed audience and cloud your auction in skepticism and suspicion. Try some honesty.
Grading - I could go all day on this. Just learn to grade somewhere in the ballpark or let the prospective buyers grade it for themselves using the "quality" pictures in the listing. I love the auctions that list the coin as MS-65 and it's an obvious pocket piece.

Photos - Absolutely required and the best possible resolution is recommended. No photos or blurry photos will get you melt price for silver/gold. A coin has two sides ... a listing with only an obverse photo drives me insane

and I'll move to the next listing in a heartbeat. This is especially evident when the coin is in a PCGS or NGC slab. I buy the coin, not the slab. I've also seen semi-rare varieties that I could attribute from a picture of the obverse only go for melt because most folks need to confirm with the reverse photo. How many more "rare" varieties go unattributed because we need to see the reverse?
Accuracy - Know what you are selling and list it accurately. A listing for an 1878
Morgan dollar should not offer a picture of an 1886 ... this is getting to be a real problem lately. One of our members has an error in his current listing for an 1878 8/7 TF Morgan "possible
VAM 44". The coin is an 8TF (please see note on hype).
As an avid collector, when I find a seller that avoids hype, accurately lists his/her offerings, using quality pictures of both the obverse and reverse allowing me to grade the piece, I go through their offerings first and will choose to do business with them over a similar coin offered from a seller using tactics described here.
Thanks for letting me rant.
