Think long and hard before you try a 2 or 3 pronged wrench on your 6 slotted back. It is almost impossible to not slip with the 2 prong wrench, and the 3 prong Jaxa style is not much better.
The manufacturers sold little sheet metal wrenches that engaged all of the slots in the back, and as such are almost idiot proof. You fit the wrench to the back, set the watch face against your fingers, and squeeze the wrench to the back with your thumb. Then using your other hand rotate the wrench handle CCW to loosen. -Chuck Harris Thomas A Frank wrote:
Stan; Here is a source for the necessary tools: http://www.ofrei.com/page557.html Note that they are not inexpensive; something to factor in when you consider the overall cost of maintenance. If it really has been 20 years, there is every possibility that the battery has leaked, in which case the repair will not be trivial. Tom Frank
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