IWC Tonneau Old Inter: Cal.423
Symptoms: Immobility (spring broken)
Repair contents: Overhaul, case cleaning, spring replacement
Repair cost: Overhaul: 27,500 yen + parts: 5,500 yen Total: 33,000 yen
I took it apart and cleaned it. Old Inter's hand-wound model is famous for being 89, but this one is 423. I think it will be a little thinner.
Old Inter springs have a special shape and use a spring with a horn. Old Inter springs are still available at domestic material stores, but they are more expensive than regular springs, so we charge an additional part fee. If we are unable to obtain a spring, we will modify a substitute spring and use it. This time we were able to obtain a new one, so we will replace it.
Currently being assembled. I think it is from the 60's, but it is in good condition.
The reverse side has also been assembled. The shock spring for the escape wheel has a unique shape.
Attach the dial and hands. The hand-wound model without a calendar has a simple structure and is less likely to break down. Place it in an 18KWG case and let it run.
We will continue to offer various repairs in the future.