The 1937-D Buffalo nickel is widely considered a common coin, and it is for all intents and purposes. There are plenty of circulated and low-end uncirculated examples for collectors to choose from. Survival estimates also suggest 8,000 or so are available in the grades of MS65 or better. However, there are few in MS68, a grade that attracts registry set collectors to ante up mightily with strong bids and a few hefty five-figure price records.