Hi Hillclocks (post #29),
Swarovski Optik has been in operation since 1949, and unsurprisingly they’ve used a variety of patterns of serial numbering
in nearly three quarters of a century *
Initially they only used digits (0 to 9) in a variety of combinations (including different starting digits, and different lengths of numbers),
but as models and product lines increased the numbering increasingly overlapped.
Staring in 1985 they introduced a variety of patterns of alpha-numeric numbering (both letters and digits) on some models,
so that each number was unique.
Then in 1991 they standardised on a number of patterns (with different starting letters) across all the production.
And in September 2020 the patterns were universally changed to the current versions.
For a detailed overview of the types and composition of the A-N patterns used on the various commercial production from 1985 to 2020,
see the first two tables at:
Swarovski's Alpha-Numeric Numbering Explained
And for the numbering from September 2020 on, see post #18 at:
Swarovski serialnumbers changed
- - - -
The number DA9012008, indicates a unit refurbished by SONA (Swarovski Optik North America) in 2020:
• the pattern AA+7, was in use from August 1991 to September 2020, and was applied when the part with the original number was replaced, and;
• the year is determined by adding 1930 to the first two digits.
John
* So will there be any new introductions, limited editions or special offers to mark the 75th Anniversary next year?