I think you paid an OK price for that nice buffalo, the case is not from any real grading company but still nice. I still don't have any UNC buffaloes in my collection so I think yours is pretty sweet.
Maybe better photos would help but at $28 it's likely you probably overpaid especially for a coin in a generic slab that says 'Mints State'.
That's a CoinWorld "premium" holder; note the logo on the lower left. With that said, I regret that I must agree with the likely overpaid post. Although I cannot see the coin well enough to speak of its grade, for around what you paid, perhaps a little more or not with a little looking, you could have picked up a certified gem/gem+ of this date/mint, and have had a level of liquidity you do not with this one. However, being as its not a great amount of money, if you can get $28 worth of enjoyment out of it, you'll end up ahead of the game.
If it is indeed MS , you didn't do to bad !! As everyone has stated you might have over paid a few bucks, but I wouldn't worry much .. That date ( very common ) usually sells for 15-18 raw for nice BU coins , around 30 bucks for slabbed ms64s in one of the top TPGs holders. Check for a D/ D or D/ S mint mark ..
This is a great resource for checking on what you should pay for a coin before buying: http://www.numismedia.com/fmv/fmv.shtml
+1 to all of this. I bought a PCGS MS65 1938-D at a show, and one of the dealers I showed it to said this is the type of coin he buys all day for $20 and sells for $25 just because they're so popular and available. If you could take a detailed and well-lit photo, we might be able to get an idea about the grade. Assuming it's MS60, you have about a $15 coin in a $5 holder, so, as mistakes go, it wouldn't be a costly one.
Seems that's pretty close , one will sneak by around 30 here and there .. Most are selling in the 40 dollar range ...
I'm still waiting for you to show me a website with better prices. I'm also curious to see you try to get greysheet from any dealer without identifying yourself as a dealer first. Let me know how that goes.
"Identifying" one's self as a "dealer" and expecting to get the super special boy's club prices is, in my most humble opinion, laughable. It never ceased to amaze me how many, by simply uttering the word "dealer" would expect to be whisked to the land of milk, honey, and laughing at those who didn't realize that's all it takes to buy wholesale,or even just their individual idea of "wholesale". Of course developing or established relationships have NOTHING to do with it... (roll eyes here). Seriously though.. for a coin such as this that is beyond plentiful, the CDN can be viewed as more of a retail guide, and this is especially true with examples that display no special characteristics. Sure, people often pay more for such coins, especially on eBay, but that does not mean they cannot be had cheaper, by anyone, at other venues. Like it or not, eBay, with its exceptionally large pool of uneducated, inexperienced, or just plain unfamiliar buyers makes it ripe for paying more than necessary. One with the will to do so and enough free time to make a go of it can, without great risk or knowledge, attend even small shows or buy from the right B&M, resell on eBay, and turn a fair profit in the process, even after fees.
When I was setting up at coin shows I quoted the same price for my coins whether or not if you were a dealer. Money is money to me. Anyhow, If you are willing to pay greysheet bid for common date 65 buffs then you better bring a big truck.
I remember 20 yrs ago common date 65 Buffs were bid at $50 ea., and within 3 hrs I was able to buy over 70 pieces (non 38Ds) for $45 ea from different dealers on the floor.
You can own this 37P for < $40 bucks. http://www.ebay.com/itm/1937-Buffal...295?pt=LH_DefaultDomain_0&hash=item1a01a47edf http://www.ebay.com/itm/1938-D-MS65...703?pt=LH_DefaultDomain_0&hash=item2801b82727
Ya know price guides are just that , guides. Some closer to reality than others. Even though one may say this or that is over valued , it gives you a good idea or puts you in the right ball park so to speak. To me ,yeah 45 bucks is over the top for a common date ms65 buff. I just bought one a couple days ago for less then 20 bucks. Even though most of what you see sold on eBay are selling Close to what numismedia has them valued at .. Now one might can buy a 18 wheeler full for 20 bucks each , but there are buyers like me that live in the middle of no where. No coin shows , no coin shops , only eBay to purachase coins and if you think there prices are high you should see what the local pawn shop or local flea market prices are ! It took me watching buffs on eBay a while to get one under 20 bucks, so if I could buy them for that price by the truck load .. I'd be bringing a really big truck , and doubling my money on eBay!!!