About thirty years ago upon completing my training, I was doing watch repair for jewelry stores. I found that they wanted me to not take the watches completely apart, but just run them through a cleaning process called one step (cleaning and oiling with a plastic lube in the final rinse). When I was trained I was trained to use different oils in differing amounts in various parts of the watch, and to visually inspect the gears for excess wear and end shake. Using one-step lube allows the repair to be inexpensive. As not much time is invested in the process. Watches however were not designed for such treatment and this is not the way they should be maintained. So I dropped the wholesale repair and opened up my own repair shop, where I could clean and oil watches the way they were designed to be cleaned and oiled. For example, when oiling the watch, actually taking the balance out of the watch and putting oil in the cap jewels where it belongs (something that doesn't happen with one step cleaning and oiling).
When I receive your watch, which you have carefully wrapped in double padding, I give it a number that is scratched in the inside case back this is standard practice and something that can be very useful to you if your watch is ever stolen and recovered, as you the watch owner can then identify your watch. I then log it into a book with it's unique number. I determine what kind of work needs to be done, and I E-Mail or telephone you an estimate. Upon receiving your authorization I proceed. When the repair has been completed I E-Mail or telephone you with the amount due, requesting a check or credit card authorization. After receiving payment I then mail your watch back.
Thirty years ago when I started in this profession. there were a lot of mechanical watches and very few battery powered watches. As time goes by and the battery powered watches have proliferated, manufacturers have stopped making parts for a lot of mechanical watches. Parts are therefore getting harder and harder to find. Fixing the watch by making the part can be very very expensive, and sometimes it is a part I am not able to make. You may have to wait weeks-to-months while I look for parts. I will give you my detailed opinion as to different options and costs and do what you request.
As stated on my home page I make my living repairing watches and enjoy the challenge of working with small parts that hardly anybody except me can see. If you decide to send me your watch for repair I will feel honored and will do the best job I can, including a one year no quibble warranty.