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Built from three things we can see. It estimates how strongly a product is performing — it is never sales, revenue or ad spend.
Ranked #8 of the ~1253 products this store sells. A high rank in a big store counts for more than one in a small store.
How many days it has stayed in this store’s top 10 over the last 30 days. A rank that holds is harder to fake than one good day.
No ad match or other-store listing is backing this product up right now.
Public Google ad records for the advertiser behind this store. They show that ads ran and for how long — never how much was spent.
How busy the store looks, and how many products it sells.
Reference data taken from the store's own public product listing.
Handcrafted with care in Nara prefecture, each shell button is a unique treasure. Its natural iridescence catches the light beautifully, adding a touch of elegance and character that plastic buttons can’t match. Note: As each button is made from natural shell, color, pattern, shape, and shine may vary, making every piece one-of-a-kind. *Listed price is for one card with buttons shown on the photo. About 4nov 4nov, run by a couple in Nara with decades of craftsmanship, creates handmade shell pro…
This product is the #8 best-seller at Kokka Fabrics (~1253 products) and has stayed in the top 10 for 30 days. Winner score 61/100 — strong.
Strong
Price on the live page
of the ~1,253 products this store sells
Longest ad run we saw: about 27 months
17 scans · best-seller rank held at #8 throughout · score rose as the hold window filled · estimate, not sales.
| Advertiser | Country | Format | Verified | First shown | Last shown |
|---|---|---|---|---|---|
| 株式会社コッカ | — | text | Verified | 28 May 2024, 15:15:16 UTC | 26 Sept 2025, 02:06:36 UTC |
| 株式会社コッカ | — | image | Verified | 4 Dec 2025, 13:39:25 UTC | 9 Jan 2026, 06:14:03 UTC |
| 株式会社コッカ | — | image | Verified | 9 Aug 2024, 11:31:42 UTC | 4 Dec 2025, 09:53:13 UTC |
| 株式会社コッカ | — | text | Verified | 28 May 2024, 14:54:05 UTC | 26 Sept 2025, 02:45:43 UTC |
| 株式会社コッカ | — | text | Verified | 27 May 2024, 13:53:00 UTC | 5 Aug 2026, 16:31:13 UTC |
Other products from this store, ordered by winner score.
![4nov Shell Buttons [Donuts Black-lip Shell / 10mm] LPS-073](https://cdn.shopify.com/s/files/1/0623/3345/2503/files/DSC_0061_d76e3ceb-5f54-4439-b29c-a0e601d2ce36.jpg?v=1770360180)
4nov Shell Buttons [Donuts Black-lip Shell / 10mm] LPS-073
$19.00Best-seller #9
![4nov Shell Buttons [Flat Round Black-lip Shell / 13mm] LPS-075](https://cdn.shopify.com/s/files/1/0623/3345/2503/files/DSC_0056_83548c27-6d94-4e4d-8d02-f29166f2160c.jpg?v=1770360512)
4nov Shell Buttons [Flat Round Black-lip Shell / 13mm] LPS-075
$19.00Best-seller #10
![4nov Shell Buttons [Flat Round Brown-lip Shell / 13mm] LPS-076](https://cdn.shopify.com/s/files/1/0623/3345/2503/files/DSC_0059_d33b065d-9bab-463e-a9ba-8babc5d9da4f.jpg?v=1770359975)
4nov Shell Buttons [Flat Round Brown-lip Shell / 13mm] LPS-076
$19.00Best-seller #11
![4nov Shell Buttons [Round Black-lip Shell / 10mm] LPS-074](https://cdn.shopify.com/s/files/1/0623/3345/2503/files/DSC_0060_5de3b8a6-7ac3-4f0e-a630-ef795651671c.jpg?v=1770360060)
4nov Shell Buttons [Round Black-lip Shell / 10mm] LPS-074
$19.00Best-seller #12
![4nov Shell Buttons [Coffee Beans Trocas Shell / 15mm] LPS-070](https://cdn.shopify.com/s/files/1/0623/3345/2503/files/kokka092517240.jpg?v=1770360364)