I read some of the posts on the 156's showing up on the online auctions and some people believed that they may have been old stock for warranty work so i looked at all the auctions for these and noticed that the sheaths are completely different from the old ones and then i remembered that schrade reintroduced the 156 to celebrate their 110th anniversary so the recent ones that are selling for outrageous prices are most likely the ones that were made up for the 100th and that's why the sheaths are different and most likely they too are made from stainless steel! which is what the buyer likely doesnt want but then again it may make them more collectible due to the fact that there are only a limited number of them out there. The blades were originally supposed to be etched with the 100th anniversary etching but these didnt have the shields in the handles and were not intended to have it and the ones with the etch are very few and sometimes can be found online but if you want a carbon model you should look for an older one and the sheath might just be the key in identifying it as such. I myself paid dearly for 4 older ones and have already parted with one.