Yes that watch had seen a hard life indeed. The original owner was a missionary working in Rwanda, and my customer had gone there to assist in this work for a few weeks. He noted that the missionary wore this watch that did not actually function, and offered to swap his watch (another Seiko 5) for the non-functional watch. He then brought me this Seiko for servicing.
His desire was to keep the outward appearance of the watch the same as when he received it, to remind him of the circumstances of where the watch came from. This was by far the dirtiest watch I have ever serviced, but when the service was complete the watch ran very well.