Hello Mr. Dave Nelson,

You wrote:
Bruce has, by far, the cheapest and simplest solution. Also, the 4060 includes the oscillator, so all you need is a rock (32,768Hz $0.81 for 20ppm), the chip ($0.65), and a cap or two.

There is only one problem with what you state. IT WILL NOT WORK! Why? Because the 4060 will only output 2 Hz with a 32,768 Hz oscillator. You will need another divide by two to get 1 Hz.

Regards,

Charles Bannister