Chronograph does not function as it should and time keeping is not accurate at all. Button at the 10 o'clock position moves the day wheel while that at the 8 o'clock position moves the date needle (blue). The movement definitely needs a service/repair. Case size: 36mm without crown.
Leather straps: replacement leather straps with generic steel buckle. The item "Heuer -Vintage Triple Calender Chronograph Moonphase Valjoux 88 Watch for repair" is in sale since Friday, May 8, 2020. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Wristwatches". The seller is "sg-2465-8973-beck" and is located in Singapore. This item can be shipped worldwide.