Once your order is shipped, you’ll receive a confirmation email with a tracking number. You can use this to track your package in real time.

Payments are processed securely through Cashfree. We accept all major credit and debit cards, net banking, UPI, and popular wallets. Sigma Stamps does not store your card or bank details.

Yes. All prices are in Indian Rupees (INR) and inclusive of 18% GST where applicable.

Currently, we ship within India only. International shipping may be added in the future. Please write to info@sigmastamps.com if you have a specific request.

A flat rate of ₹100 applies to all orders within India. Free shipping on orders above ₹5,000. Estimated delivery is typically 5–10 business days, depending on your location.

Yes — every stamp on Sigma Stamps is genuine and sold as described. Condition (mint, used, etc.) is noted on each product page to the best of our knowledge. Images are representative; actual items may vary slightly given the unique nature of collectible stamps.

Because of the collectible and fragile nature of postal stamps, we do not accept returns or refunds once an order has been shipped. Please review your order carefully (items, quantity, address) before confirming payment. See the Refund & Returns Policy for full details.

Email info@sigmastamps.com within 48 hours of delivery with your order number, clear photos of the damage, and a short unboxing video if available. Claims after 48 hours or without proof cannot be accepted.

Yes — orders can be cancelled free of charge any time before they ship. Once an order has been handed over to the courier, cancellation is no longer possible. Email info@sigmastamps.com with your order number to cancel.

We review claims and cancellation requests within 3–5 business days. Approved refunds are processed back to your original payment method via Cashfree and may take an additional 5–10 business days to appear in your account, depending on your bank.

Store stamps in a cool, dry place away from direct sunlight. Use acid-free albums or stockbooks to protect them from damage and preserve their value over time.