Buy & sell old books, rare coins, and collectibles.
Every transaction is assisted on WhatsApp — verified listings, safer deals, real people mediating from enquiry to delivery.
Old Books
Rare Coins
Collectibles
WhatsApp Deals
Browse by category
Every listing is moderated before it goes live.
How obs.sale works
Website for discovery. WhatsApp for the actual deal.
1. List or Browse
Sellers submit a structured listing. Buyers browse moderated, verified listings by category.
2. Moderation
Every listing is reviewed against our photo, condition, and disclosure rules before it goes public.
3. WhatsApp Enquiry
Buyer taps "Enquire on WhatsApp" — our team already has the listing context before replying.
4. We Mediate
Availability, condition proof, negotiation, shipping, and payment are coordinated by our team.
5. Ship & Confirm
Proof-of-dispatch and proof-of-receipt are logged. High-value items go through an inspection hold.
6. Rate & Close
Both sides rate the deal. Any dispute is handled through our structured resolution workflow.
Trust is the whole business
Without trust, a marketplace like this becomes a scam magnet. Here's the stack we run on every deal.
Seller KYC
Identity checks before a seller can list high-value items.
Phone & WhatsApp Verified
Every seller confirms a real, reachable phone number.
Moderated Listings Only
Nothing goes live without human review against our checklist.
Mandatory Photo Rules
Category-specific photo requirements — no stock images.
Condition Disclosure
Structured defect and condition forms, not free-text guesses.
Escrow for High-Value Items
Funds held during an inspection window on coins & collectibles.
Featured listings
Freshly moderated and approved.
📚 BK-A1111111NCERT Biology Class 12 (2023 Edition)
Mumbai, Maharashtra
📚 BK-A1111111Malgudi Days - R.K. Narayan (First Indian Thames & Hudson reprint)
Ahmedabad, Gujarat
💰 CN-B22222221939 British India King George VI 1 Rupee Silver Coin
Bengaluru, Karnataka
🏺 CL-C3333333Vintage Kodak Brownie Camera (1960s)
Mumbai, Maharashtra
📚 BK-D4444444Wren & Martin High School English Grammar (Old Edition)
Ahmedabad, Gujarat
💰 CN-E55555551971 Bangladesh Liberation Commemorative Coin Set
Bengaluru, Karnataka
Have old books, coins, or collectibles to sell?
List for free, get moderated by our team, and let us handle the buyer conversation on WhatsApp — from first enquiry to final payment.
Start sellingWhat our community says
“I was nervous buying a silver coin online, but the obs.sale team checked the seller's photos and handled the whole payment hold until I confirmed the coin matched the listing.”
Priya, Buyer — Pune
“Listed my old engineering textbooks in ten minutes. The WhatsApp handoff meant I didn't have to keep checking the website — buyers just messaged me directly through the team.”
Suresh, Seller — Chennai
“The condition disclosure form on the collectible I bought was more detailed than any other site I've used. No surprises when it arrived.”
Anita, Buyer — Delhi
Frequently asked questions
View all FAQs →Why does everything go through WhatsApp?
The website handles discovery, search, and trust — but negotiation, document exchange, and support work best in a real conversation. WhatsApp lets our team mediate every deal directly.
How does shipping and payment actually work?
It depends on the item's value. Low-value books are direct between buyer and seller. Mid-value orders go through assisted payment. High-value coins and collectibles use an escrow-style inspection hold.
What if the item doesn't match the listing?
Every order has a dispute workflow. Report it through WhatsApp or your order page, and our team investigates using the proof-of-dispatch and proof-of-receipt records.