Kate Spade Serial Number Checker
Kate Spade does not give its bags a serial number. What a genuine bag carries is a style number — eight characters, four letters and four digits such as WKRU5799, or five letters and three digits such as NJMUA099 — printed on a small square tag inside the bag, sitting above the black tag with the brand's rainbow or holographic stripe. The number identifies the model and colourway, and the brand's own product pages use the same code, so a search should return the exact bag you are holding.
What it does not carry is a date. No Kate Spade code encodes when a bag was made; the era comes from the tag design and the logo generation instead. This checker validates the style number's format, treats it as the lookup it is, and stops there rather than inventing a year.
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How to read it
Type the style number from the small square tag. The checker confirms it fits one of the two standard shapes and reminds you what the lookup should return — the same style, colour and category as the bag in your hands.
| Marking | What it gives |
|---|---|
| WKRU5799 (4 letters + 4 digits) | style number — model and colourway lookup |
| NJMUA099 (5 letters + 3 digits) | style number, second standard shape |
| Black tag with rainbow / holographic stripe | the brand tag beneath the style tag — no number to read |
| Any Kate Spade code | no date — the tag design places the era |
Where to find it on the item
Inside the bag, in the main compartment or an interior pocket: a small square white or cream tag with the style number, stitched directly above a black rectangular tag carrying the brand name and a rainbow or holographic stripe. Wallets carry the same pair on a shorter interior tab. A dust bag and care card may quote the style number too, but the interior tag is the one to read.
What each Kate Spade marking gives
| Marking | Gives / doesn't give |
|---|---|
| Style number | model + colourway; searchable on the brand's own site — not unique to your bag |
| Tag design and logo generation | era placement — the spade logo and lettering changed across the 2010s |
| Lining print | model-level tell — genuine linings match the style's documented interior |
| Any number | no date reading — none is published |
Worked examples
Reading WKRU5799
Four letters, four digits: the standard style number. Search it — a genuine one resolves to the exact style and colour you are holding. It carries no year.
Reading NJMUA099
Five letters, three digits: the second standard shape, common on the Kate Spade New York lines. Same reading — identification, no date.
Reading style number returns a wallet
You hold a tote and the number resolves to a wallet: the tag was copied from another product — a common counterfeit shortcut and a fail regardless of how well the tag is printed.
Kate Spade serial number questions
Do Kate Spade bags have serial numbers?
No. They carry a style number on a small interior tag, shared by every bag of that model and colour. There is no unique serial and no public registry — the format check and the lookup are what you have.
Can the number tell me when the bag was made?
No — Kate Spade publishes no date reading and none of its codes encode one. The tag design and logo generation place a bag in its era; a tool returning a year from the style number is inventing it.
Where is the style number?
On a small square tag inside the bag, directly above the black tag with the rainbow or holographic stripe. Wallets carry it on a shorter interior tab.
The style number searches to a different colour
The last part of the code encodes the colourway, so a different colour usually means a mistyped or copied tag. Re-read the tag; if it still mismatches, treat the bag as failing until an authenticator says otherwise.
Does a correct style number prove authenticity?
No — tags are copied. After the lookup, judge the piece: the spade logo's shape and placement, stitching, the weight and engraving of the hardware, and whether the lining matches the style's documented interior.
Does age move a Kate Spade's value?
Model and condition move it far more — Kate Spade is a premium contemporary house, and resale follows current styles. The live pieces below show current UAE asking prices.