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    • Mars Goliath 15 inch DD open-frame search coil in black with blue connector and coiled cable, for Makro CF77
    • Mars Goliath 15 inch open-frame DD search coil in black with attached cable and blue connector, seen from above
    • Mars Goliath 15 inch open-frame DD search coil in black with cable and blue connector, for Makro CF77 detector
    • Mars Goliath 15 inch open-frame DD search coil in black with cable and mounting bracket, for Makro CF77
    • Mars Goliath 15 inch open-frame DD search coil in black with cross spokes, cable and blue connector, for Makro CF77
    • Mars Goliath 15 inch open-frame DD search coil in black with coiled cable and blue connector, for Makro CF77
    • Gold Mars logo with interlocking M and D letters in a circle and the text M@RS in the centre on a black background
    Sale!

    Mars Goliath 15 inch DD Waterproof Search Coil for Makro CF77 Coin Finder Detector

    Vendor:Mars Type:Coils
    SKU: MMD-MAKRO-GOLIATH-CF77
    Sale Price $132.50 Regular Price $200.00

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    4.9 from 3,100+ verified reviews · 4.8 on Google
    • Authorized U.S. dealer Genuine Mars, full manufacturer warranty.
    • Free shipping, ships today Order by 3 PM ET Mon to Fri, noon ET Sat. Contiguous U.S.
    • 30-day free returns Prepaid return label included.
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    The MarsMD Goliath is a 15 inch (38 cm) Double-D aftermarket search coil, in the version made for the Makro CF77 Coin Finder. MarsMD built it for the most detection depth and the widest scan field it can give, and it works most efficiently on large open areas clear of thick vegetation.

    Configuration
    Coil MarsMD Goliath, 15 in
    Type Double-D (DD)
    Fits Makro CF77 Coin Finder
    Waterproof Yes

    What is in the box with the MarsMD Goliath 15 inch

    MarsMD's standard contents for the MarsMD Goliath 15 inch

    • MarsMD Goliath DD search coil
    • Coil cover
    • Connector protection cap to keep dirt and dust out when the coil is not in use
    • Coil attachment bolt with mounting nut
    • Two rubber rings

    Photos are stock images, and the coil you receive may differ slightly in appearance.

    Which detectors the MarsMD Goliath 15 inch fits

    • Makro CF77 Coin Finder

    We carry separate versions of the MarsMD Goliath for different detectors, each listed by the detector it fits. The version here is for the Makro CF77 Coin Finder, so check the model on your control box before you order. Versions for other detectors are in our MarsMD Search Coils collection.

    When to use the MarsMD Goliath 15 inch

    The Goliath is a 15 inch Double-D coil built for depth and a large scan area. Thick vegetation works against it; open ground is where it is most efficient. MarsMD makes only Double-D coils, and every MarsMD coil is waterproof. MarsMD gives its weight as from 580 g (20.5 oz), since the weight can run higher depending on the detector version. The coil body is filled with high quality epoxy resin inside a high impact resistant, UV protected plastic shell. It has a robust mounting bracket and a screw-on connector, and the cable strain relief keeps the cable entry waterproof. The coil is protected against electrical interference.

    Choose the Goliath for a CF77 when you have wide, clear ground to search and want the most coverage per sweep. Keep the coil level and the swing unhurried, and set sensitivity where the threshold stays steady. Trashy spots and tight corners suit the 10 x 6 inch Sniper better, and the 13 inch Discovery sits between the two. Our metal detector coil guide explains how coil size and type trade coverage for separation.

    MarsMD Goliath 15 inch specifications

    Specification MarsMD Goliath 15 inch
    Size 15 in (38 cm)
    Type Double-D (DD)
    Weight from 580 g (20.5 oz)
    Feature Built for depth
    Waterproof Yes
    Connector Screw-on
    Construction Epoxy resin filled, impact resistant UV protected shell
    Fits Makro CF77 Coin Finder
    Warranty 3 years from the date of purchase

    MarsMD gives its coils a 3-year warranty from the date of purchase. Every MarsMD coil we carry is in our MarsMD Search Coils collection.

    Serious Detecting is a family-owned, authorized MarsMD dealer with a showroom in Ypsilanti, Michigan, and our staff help by phone or email.

    Product Specifications
    Specification Name Specification Value
    Compatibility
    Fits Nokta Nokta CF77 Coin Finder
    Coil
    Coil Size 15" (38 cm)
    Coil Type Double-D (DD)
    Coil Shape Round
    Coil Build Open
    Coil Connection Wired
    Waterproofing
    Water Resistance Waterproof
    Details
    Color Black
    Box & Warranty
    Warranty 3 Years
    Service & Support

    Warranty & Product Assurance

    At Serious Detecting, we stand behind the quality of every product we offer. Warranty coverage is provided directly by the manufacturer and may vary depending on the item. We’re here to help you understand your coverage and assist with the warranty process when needed. If you ever have questions or need support navigating a warranty claim, our team is happy to guide you.

    Technical Support & Expert Guidance

    Whether you’re setting up new gear, optimizing performance, or troubleshooting an issue in the field, our knowledgeable support team is here to help. We use this equipment ourselves, so we can offer real-world tips and step-by-step assistance to get you detecting with confidence. Message us anytime and we’ll do our best to get you pointed in the right direction fast.

    Manuals, Resources & Downloads

    Access user manuals, setup guides, safety tips, and technical documentation in our online support center. These resources help you understand your equipment, learn recommended settings, and get the most out of every hunt.

    Replacement Parts & Accessories

    Keep your equipment running strong with genuine parts and accessories. We carry coils, batteries, chargers, protective gear, digging tools, and more — fully compatible with your detector and backed by manufacturer standards. Not sure what fits your model? Just ask — we’re here to help.

    Training & Tutorials

    New to detecting or upgrading to advanced equipment? Our resource library includes helpful guides, maintenance tips, how-to videos, and expert advice from experienced detectorists. From ground balancing and coil choices to target ID basics and field technique, you’ll find the knowledge you need to level up your success.

    Customer Questions & Expert Answers

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