Collect. Together.
Know what you own. Show what you hunt. Trade with people you trust.
CoinStackup is a social portfolio for coin collectors. Track cost and Greysheet value in your vault, share what you still need, and trade with people you actually know.
Vault
Know what you own.
Log dates, grades, and cost. See Greysheet / CPG value and ROI. Watch set checklists fill in.
Tribe
Show what you hunt.
A public profile and a hunt list so other collectors can see the holes you care about — not a firehose of strangers.
Deals
Trade with people you trust.
Coming next. Propose a swap with someone you follow. No marketplace. No strangers with shopping carts.
Want notes, not an account yet?
Occasional collector notes. No daily blasts.
Cost basis stays private. Public collection is opt-in.