Undated
Gebrüder Thonet
Black THONET AUSTRIA stamp on a circular plate inset in the wooden frame, with a separate 1 below. The number is not treated as a year.
Identification guide
Black and Decker date code
With Black and Decker date code, batteries can have the code on the housing near the contacts; chargers can carry it on the underside.
Housing code and final suffix
A code such as 2023-18-XX denotes week 18 of 2023, followed by factory or production characters. Batteries can have the code on the housing near the contacts; chargers can carry it on the underside.
Year-week format
| Example part | Meaning |
|---|---|
| 2023 | Year |
| 18 | Week |
| XX | Final production characters |
What to check next
Read the model beside the date and keep the suffix intact. Appliance, outdoor-equipment and tool labels can differ. A battery, charger and tool are separate items and can carry different manufacture dates.