An invented example, but a real workflow. A regular walks into Foothill Rare Pulls — a shop we made up for this post — with nine slabs to consign. The owner photographs each one, quotes the split, and closes each case with a Serial Seal™ carrying the shop's logo and a number: FRP-0221 through FRP-0229. The numbers go in the consignment log next to the consignor's name and the agreed price. When slab FRP-0224 sells on Whatnot three weeks later, the number in the listing photo is the number on the case is the number in the log.
None of that required software. It required a numbering scheme, a log, and a run of seals printed with both.
This post is the counter version of that system: intake, store-numbered inventory, and matching display tags that make the shelf read as one shop instead of twelve suppliers. The workflow does not care whether the case holds sports cards or TCG singles.
What the Serial Seal™ is doing here, and what it is not
Be clear about the physical object first. A seal is thin film with adhesive. It does not keep anyone out of a one-touch, a person with a hobby knife gets past it in under a minute, and it can be peeled off and a different seal applied — an intact seal, on its own, proves nothing. If you are shopping for a lock, this is not one, and neither is anything else in this product category.
At a shop counter the seal is doing bookkeeping and branding at the same time. The number is a record you can photograph with a date, log and read back. The artwork is your shop on the outside of every case that leaves the building. Those are the two jobs, and they are the only two jobs the film performs.
Intake: give every consignment a number the moment it crosses the counter
The failure mode in consignment is not theft, it is ambiguity. Two owners consign the same card in the same grade, a slab comes back from a show, and now the shop is reconstructing whose copy is whose from memory and a phone photo.
A sequential prefix scheme removes the ambiguity for the cost of a seal. The pattern most shops use looks like FRP-0221: shop initials, then a number that only ever counts up. You pick the prefix and the starting number when you order, the run prints sequentially, and no seal in an order repeats a number. Practical rules that hold up:
- Seal at intake, not at listing. The number should exist before the slab touches the back room. Log it against the consignor's name, the card, and the split in the same minute.
- One sequence for everything. Do not run separate ranges for consignments, case stock and show inventory. A single ascending sequence means the log is also a timeline, and you never have two items wearing the same number.
- Put the number in the listing photo. On Whatnot and eBay, the seal in the photo matches the seal on the case the buyer receives. That is a small, concrete piece of continuity between the listing and the mailbox.
- Keep the log boring. A spreadsheet with number, item, source, date and status outperforms most software, because the seal number is the join key and it is physically attached to the inventory.
When a consignment sells, the log row closes. When one comes back unsold, the number tells you exactly which agreement it belongs to. The seal did not secure anything. It indexed everything.
Store-numbered inventory: the case, the shelf and the show box
The same sequence covers stock the shop owns. Case inventory gets sealed and numbered as it is priced, which does three things: the display case reads as one branded program instead of a pile of holders, the weekly count is reading numbers off a shelf, and anything pulled for a live stream or a show box can be checked back in against the log by number.
Breakers and repack sellers who run a retail counter already know this shape: the hit gets sealed and numbered on stream, and the number follows it through the listing, the sale and the package. A shop does the same thing at lower speed; the number is the thread that survives every hand-off.
On artwork: almost every shop that orders this puts its own logo on the seal. Fandom motifs sell fine to collectors sealing their own binders; a business sealing other people's consignments wants its name on the film, in shop colours. If the logo is a single light colour, look at the preview over holographic stock before ordering, because light art over a rainbow ground can wash out.
The matching tag: making the shelf one system
The seal handles the case. The display tag handles the shelf.
A grading sticker is a printed tag in the same die and artwork as the seal, sitting with a slab or a toploader in the display case. Where the seal says this specific item is ours and logged, the tag says the display itself is ours: price, grade opinion, store number, whatever the shop prints on it.
One thing to say plainly, because the word grading appears in the product name: these are shop display tags, not grading labels, and they do not imitate anyone's slab insert. Not affiliated with or certified by any third-party grading company. If the shop writes a grade on a tag, that is the shop's opinion under the shop's name, which is exactly how a counter has always worked.
The point of matching the two is that the customer sees one system. The case in their hand, the shelf it came from, and the package it ships in all carry the same mark. It reads as a shop that has its act together, and the effect is cumulative across every case in the room.
What the system costs
60 Serial Seal™ minimum · From $30.00 · As low as $0.30 each in bulk.
Seals start at 60 for $30.00, which is the 50-cent list rate, and the volume ladder keeps stepping down all the way to 30 cents at 4,200 seals, which is the floor for every run above that. Most shops order in the 120 to 1,200 range — 45 cents each at 120, 40 cents each once you pass 600 — which covers a quarter or two of intake plus case stock, and the tier applies automatically at checkout. Self-serve tops out at 10,008 seals; bigger runs we quote rather than post, so ask us. No setup, die, or design fees, and a commercial license and copyright are included.
Stickers run 12 for $6.00, which is $0.50 a sticker. A display case does not need many: tags mark the shelf, seals mark the inventory.
On a thirty-dollar card, a seal bought in that range is between one and two percent of the sale; on anything pricier, less. The honest comparison is not seal versus no seal, it is branded and numbered versus a stock silver sticker that indexes nothing and names nobody.
Skip the QR unless you have somewhere for it to go
The seals take an optional QR, and most shops skip it. That is the right call if there is nowhere useful for it to land. A QR pointing at a dead Linktree is worse than no QR.
The case for adding it: a shop with a live Whatnot schedule or a storefront page gets a direct line from every sealed case in the wild back to the next stream. The standard QR is free and fixed — one URL, chosen at print time, forever. If you want the destination editable after printing plus a scan count, that is the paid SerialSeal Business subscription. If the page it would point at does not exist yet, print the run without it and revisit on the next order.
Questions shops ask
Can the numbering match what we already use?
Yes. You set the prefix, so a shop already at FRP-0480 in its log orders the next run starting at 0481 and the sequence never breaks.
Do the Serial Seals™ and tags have to match?
No, but matching artwork is the reason to buy them together; it turns two products into one counter system.
What happens when we run out mid-sequence?
Order the next run starting one past your last number; runs are sequential within an order, so the sequence stays continuous.
Start with the seal run: put your logo and your numbering scheme into the builder and price the quantity your intake actually needs. Then add matching tags for the display case, and the counter, the shelf and the package all say the same name.
Serial Seal is an independent printer. Not affiliated with or certified by any third-party grading company, and not affiliated with, endorsed by or sponsored by PSA, Beckett, CGC, SGC, Ultra Pro, BCW, eBay, Whatnot, TCGplayer or any card manufacturer. Brand names are used only to describe the products they make. Nothing here is legal advice.
Read next: Card shops: intake, consignment, showcase · Card show vendor supplies · Display stickers for sports cards · Number storage boxes and show inventory