Two sets of John Walker piano tuning forks, $5.

This lot is two sets of eight tuning forks in A, B, C, D, E, F, G, and G# (G sharp.) In case you're not familiar with tuning forks, you simply whack them on a firm object and the two tines of the fork vibrate audibly at a very specific frequency (while making a very precise musical tone) for 30 to 60 seconds. Tuning forks are used by choir leaders, conductors, cantors, music students and professional musicians.

What's really interesting to note here is that when I saw these tuning forks at the yard sale, the first thing that caught my eye was the white MADE IN CHINA tag sewn into the seam on the soft case. But when I looked closely at one of the forks, I saw the little 'John Walker, England' stamped into the handle and I realized that the case was made in China. Funny story, but it's amazing how you can get thrown off if you're not on your toes.

Anyway, these forks sell new for around $100 for a set of eight, so I think that my $2.50 investment in each set if fairly safe. One set of John Walker tuning forks sold on eBay for $25 and the other set sold for $40.

Photo of John Walker piano tuning forks