The Beer Stein Library shows three versions of the Mettlach 2277: The 2277a-“Nuremberg Castle”, The 2277b-“Heidelberg”, and The 2277c – “Wartburg”. The value shown for all 0.3L versions is $150-$225. This would be for a “mint condition” stein. The missing thumblift would result in a huge loss of value and many serious collectors would not want it at all. But that does not mean it is valueless as many would still desire it if there are no other flaws and it would show well on display. But the perceived value would vary wildly from buyer to buyer. I was able to round up a rear view photo of the stein; I believe it is a radish that sits at the base of the handle, not an octopus. Radishes are popular accompaniments to beer in Germany.

Not the most common form of damage that happens to a beer stein, but not unusual either. It happens.