I'm working on my next watch for the YouTube channel. I want to keep it a secret as to what the watch is, mainly because it'll be a bit of a surprise for most people and I've never seen one disassembled anywhere before. It's from a well known and highly respected brand, with a very good quality high beat (36k) movement. Long story short, I get the full watch taken down tonight, and the very last thing is disassembling the mainspring barrel and removing the spring and arbor. I got it taken apart only to find some serious wear marks in the barrel, and the spring out of flat (beyond repair). Normally this wouldn't be an issue, but I can only find 1 single seller online that has the correct replacement part. $150 for a replacement barrel and spring. OUCH!!! I'm committed at this point, as without it the watch is a paperweight, but this thing better be awesome when it's done.