Description
Seiko 7548-7010.
I recently bought this from Japan via the Yahoo auction site. The 7548 Seiko Quart diver is one of my favourite Seiko models and this one in particular because it has the screw down crystal retaining ring, screw down crown and screw case back, perfect.
This one wasn't a lot of money and I wasn't expecting a lot :)
When it arrived it was obvious by it's condition it had been used and worn often (daily ?) like a watch should be and hadn't had a pampered life.

On arrival it was not running so first thing was to replace the battery, still not working, placed the watch on the quartz tester and it was beeping away like a good one so more investigation needed.

When I removed the crown/stem to drop the movement the stem release stuck down in the release position mmmm on closer inspection it was obvious that moisture had gotten in through the crown area but luckily not a lot :) cleaned and oiled that area and all good. Now to see why it wasn't running, no twitching from the second hand at all :( but decided to coax the second hand and rotate it a few times round the dial and "bingo" it started ticking, now been running three days and still within one second so all good :)

Time now to clean up the case, as you can see in the picture under the bezel was a mess, love it as it means I'm the first into that area in some time, time for big Bertha to remove the crystal retaining ring, bugger even she grunted getting this one to move but it did.

Crystal, chapter ring and gasket no good so all replaced I used an old chapter ring from stock but hopefully I have a NOS one on the way soon, crystal replaced with a sapphire one, crown gasket replaced.

Case, bezel and retaining ring scraped to remove the really heavy build up of dirt before going in the ultrasonic for a few cycles for the final clean.

Rebuilt and fitted with a 22mm Toshi leather strap, great quality but expensive and ready to go.

Things to do, bezel insert, new chapter ring, dial/hands to be relumed (James Hyman) the lume on the hands has sunk so much that the lume was catching on the dial :)


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Another 7548-7010 from August 1984.
Apart from a battery all it needed was a new crystal, gaskets and a clean up.
Note the packaging it came in :) MM just for size ref the box.
Has received.
$SIGNUP$
$VALIDATION$
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