I visited Brimfield this week one year ago and didn't find any clock treasures. Saw one questionable Chelsea wall regulator in poor condition and a number of junky mantle and kitchen clocks, all at retail pricing.
I did find and buy a couple of old Seth Thomas clocks that weekend at tag sales outside of Brimfield.
As a lifelong resident of Brimfield, I look forward to the flea markets.. I find a lot of great deals for my clock business. Finding hard to find parts, tools, haggling and whatever.
The Brimfield Flea market is the place to go.. The really best times are the first show in May, when the dealers had 8 months to gather and store the items. The July is always the smallest, due to the heat and other people traveling. The September show is a good show since the dealers want to clear out ther stock and get ready for the fresh stuff for the next May show.
The best time to buy is usually the final weekend, Saturday's the best since the dealers want to get the items sold and may hack the price in half so they won't have to pack it. Usally the bigger, the more desperate to sell it off rather than hauling it unless they have another show to display and maybe get their asking prices.
I wanted to pass this on since I live in town and it's walking distance for me. I really look forward to it each time now.