Its a shame because its a watch in very good condition, but unfortunately the 1970s was a dark era for the Swiss watchmaking industry, with Quartz threatening their very existence, and companies not knowing whether to go with the flow and build Quartz pieces, or continue with mechanicals, which is why most did both. Some Quartz became cult pieces like the very early, and very wacky Seiko digitals (and the odd wacky Omega digital Speedmaster). These mass produced, non-precious metal, quartz pieces though, are just not something anyone wants. You'll do better giving it to a relative as a gift than trying to get market value on eBay, the Omega brand will still make it worth something to them, more so than the small amount the market will pay.