Buyer's Guide to the W126 SEC- Looking for an SEC? Don't be in a hurry! There are lots of nice ones out there. Options include 4 place rear seating in sedans, metallic paint and velour seats (few US buyers opted for) as well as front seat lumbar support thing and the electric rear window sunshade (rare). Find great deals on eBay for Mercedes 500 Sec in 500-Series. Shop with confidence. Find great deals on eBay for Mercedes 500 Sec in 500-Series. Shop with confidence. Skip to main content. eBay Logo: Shop by category. Shop by category. Enter your search keyword Mercedes Benz W126 SEC Owners Club. 3.8K likes. The 'Mercedes Benz W126 SEC Owners Club' is open to anyone who owns, drives, been driven in, washed, Equipped as tested, the AMG Mercedes-Benz. 500SEC is an undeniably expensive indulgence, boosting the basic product's price tag by twenty five per cent. But the customer receives such a distinctively modified machine for that outlay that it's no surprise just how much AMG-orientated business is finding its way through Stratton's workshops. The Mercedes-Benz 500 SEC was an S-Class coupe from the 126 series and one of the predecessors of the CL-Class. About 30,000 manufactured units made it the best-selling model of the SEC coupe series introduced in 1981. Sections of the Financial Reporting Manual have been updated as of December 1, 2017. These sections have been marked with the date tag, "Last updated: 12/1/2017," to identify the changes. Previous updates are marked using the same convention and represent the last revision to that section. We include a date tag when the change is significant. ?Results include ads from the April, 2019 issue of Hemmings Motor News. To see ads from the May, 2019 issue, you must be a subscriber to Hemmings Motor News. Link your active subscription or subscribe for instant access. Get access to our 1984 Mercedes-Benz 500SEC repair information right now, online. All of Chilton's online content for the 1984 Mercedes-Benz