The Seiko World Time A718-5010, Frankenstein

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Behold Frankenstein's World Timer. This model A718-5010 is one of three different case designs and sub-model designations of the A708/A718 line. The double-set buttons in the four corners are reminscent of the plugs in Frankenstein's monster's head and neck, and this specific 5010 sub-model is the first to include Frankfurt along with Paris and Rome as a noted Time Zone city code.

This is also the only sub-model in this line to include the SPORT 100 notation, likely indicating 100m water resistance and perhaps marking the first time that SEIKO used the World Time function as a complication on a sports watch, vs prior releases where the World Time complication was its own line of watches.

Table of Contents

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• Key Statistics
• Top-Line Sales Info
• The Case
• Comparison with other A7X8 Models
• Measurements
• Dial Frames
• Bracelets
• Production Numbers
• Resale Value
• Other Resources
• Related Articles

Key Statistics

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Top-line Sales Info

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• 35mm case (not including buttons)
• 39mm lug to lug
• 28 selectable Time Zones
• Display Medium: Nematic Liquid Crystal, FE-Mode
• Time micro-adjuster : Trimmer condenser system
• Offered in Stainless Steel and Gold-tone versions
• MSRP: Unknown

The Case

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The case is narrow at 35mm wide (not including buttons) and 39mm tall (lug-to-lug). It has a blocky shape with the vertical line pattern from the bracelet extending up into the lugs on the case.

Comparison with the other A7X8 models

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In all, there are 3 models that share the A708A/A718A module. Here, photographed together you can see that each has a distinctly different case design.

Measurements

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Here are approximate measurements.

Dial Frames

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Here are the two different dial frames.

Original Bracelet

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M1021

The M1021 bracelet is the correct and original bracelet used on the A718-5010. The lug width at the spring bars is 20mm, with the bracelet itself tapering from about 23mm to 16mm at the clasp.

Production Numbers

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Based on the image data collected to-date, this series was produced from at least February 1984 through at least April 1984. These models use a 6-digit serial number scheme, allowing for up to 9,999 watches per production month/year. Assuming a 3 month production run, this allows for a max production of 29,997 watches, with a minimum production of 12,944 based on current image data.

Resale Value

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Please note:

• This scale is a derivative of the Hagerty Classic Car Condition Rankings, adapted for watches. It is an attempt to keep it simple. They explain it really clearly here (albeit in car terms): Car Conditions: What The Numbers Mean.
• Almost no one owns or has even seen a condition 1 example of this watch in at least a few decades. Most of what is sold online today are condition 4 and 5 watches - if you think you have a gem, it is most likely a 3.
• While many enthusiasts spend inordinate amounts of time chasing down the best deal, digging through the dark corners of the internet, local antique shops and estate sales, and are ok fixing things up themselves... a lot of others would like to just know what a clean example is worth from a reputable source - that's what these are. Think of them as the price you would expect to pay if you saw one of these under the glass at your favorite local watch shop.
• All values assume OEM parts or all original examples. After market dials, mismatched bracelets etc will reduce the value, in some cases substantially. For example a non-original bracelet can reduce the overall value by 10-20%, a non-original dial may reduce resale value by 80% or more.
• Finally, gold-tone variations (these are not gold plated, but rather gold colored base metal) command a much lower resale value, from 50% to 80% less than equivalent examples in stainless steel.

Other Resources

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The Internet is littered with various documents about this watch. Here is a quick collection to save you some googling around.

• Jules Borel parts list for movement - A718A
• Jules Borel parts list for watch and case - A718-5010

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