Quote:
Slabbed coins generally fetch better prices than raw.
This is not a linear relationship though. Your statement holds true for coins that are key dates (e.g., 1887 25-cent) or more modern coins of the highest grades, so for example MS-65 in George V coins, MS-66 or better in newer coins. But - I think the opposite is true for lower end mint-state coins.
I have done a couple of tests for fun. I sold a 1952 1-cent, 5-cent, 10-cent, 25-cent and 50-cent on
ebay, all nice eye-appeal in new ICCS MS-63 holders. I took identical coins (from the same roll), that I thought were MS-63, and sold them raw simply as "Brilliant Uncirculated" Which coins realized the better hammer price?
The raw ones. This is why some
ebay sellers, like ASYN, never bother to certify coins. They take advantage of a human weakness - greed. If you are looking for a nice coin, or inventory for a coin show as a dealer, you always want to find the best coin for the dollar - certified coins take away the risk, because you know what you are getting. But a nice 100% red coin, or a silver coin with cartwheel lustre, your mind starts to think, "I think that coin is MS-64, and I can get it for MS-62 price"... and so the bidding begins....
But, in higher grades, the reverse is true. Another test. I have pulled a few MS-67 coins from a batch of 1979 1-cent rolls I purchased. I certified all the MS-67s, except one. When I got my coins back from ICCS, I listed and sold a certified MS-67 on
ebay in excess of $100. I took really good (and I mean really good) photos of a raw 1979 cent, and stated that it was my opinion that coin would fetch a MS-67 grade. The coin sold for $5 raw, and the buyer send me an email stating he nearly fell out of his chair, the coin really _was_ a MS-67. The certification added considerable value to the coin (apparently, my word was not good enough on
ebay - but aren't all internet grades accurate?

There are no rules when it comes to certifying coins - and even you make rules, you will only break them. But, unless you have some of the finest raw coins out there, or a whole pile of key dates, it is not really worth certifying them if your intention is only to sell. I think $300 is a good cut-off number in trends, for
TPG slabs of Canadian coins.
Now, certifying coins to protect them, or to play the numbers game with a registry set - well, that is another thread, because generally, your intention is not to sell those....

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