Original box and papers carry real value at resale. The guarantee card establishes when and where it was sold and supports authenticity. Missing documentation need not mean a cause for concern, but this luxury watch marketplace attracts a lower price.
The secondary watch market delivers access to references which remain discontinued or allocated. Verifying authenticity is the central concern. Case and movement numbers should match papers. Service history affects value and reliability.
Secondary market value ranges widely across the market. Steel sports models by leading makers often sell over list price, whereas precious metal dress watches usually trade below retail. Box, papers and condition govern value between examples.
Automatic and manual watches call for periodic servicing in order to maintain accuracy. Recommended periods differ by manufacturer, generally in the five to ten year range. Complete servicing includes stripping, cleaning and re-oiling. Postponing maintenance risks expensive repairs.