Free Appraisal.
We guarantee the highest possible price.
We are a franchise of Daikichi Purchase.
Through our network, we work with a large number of partner buyers affiliated with Daikichi, allowing us to offer highly competitive purchase prices.
About us
Your happiness is our success.
We are a specialty buyback store dedicated to discovering new value in your cherished items and passing them on to the next owner.
Our experienced appraisal team carefully evaluates a wide range of items, including luxury brands, jewelry, watches, and precious metals.
With a commitment to providing a service you can trust, we prioritize transparent pricing and honest communication. We strive to explain our appraisal process clearly, ensuring that even first-time customers feel confident and fully satisfied before proceeding with a transaction.
In addition to in-store services, we also offer home pickup and online appraisals, providing flexible options to suit your lifestyle.
We believe that every item holds a story and value beyond its price.
As a bridge connecting your treasured belongings to their next owner, we will continue to deliver reliable and professional services you can depend on.
English-Speaking Appraiser
Rika
Izawa
Appraiser
I specialize in evaluating jewelry and luxury brand items. My motto is that everyone should leave happy, and I am committed to offering prices that my customers can confidently accept.
Koki Kimoto
Apprasier
I am an appraiser specializing in precious metals and antiques. I value conversations with my customers and carry out each appraisal with great care, as if I am being entrusted with their precious memories.
Company
Company Name:
Sentinel Giken Co., Ltd.
Head Office:
5-13-16 Sumida, Sumida-ku
Tokyo 131-0031
Japan
Store Location:
2-17-7 Azusawa, Itabashi-ku
Tokyo 174-0051
Japan
Secondhand Dealer License:
License No. 307742518993
Issued by: Tokyo Metropolitan Public Safety Commission
Date of Issue: July 16, 2025
Representatives:
Tsuyako Yamamoto, Representative Director
Soichiro Yamamoto
Sentinel Technology Research Co., Ltd.
Location (Head Office):2-17-7 Azusawa, Itabashi City, Tokyo 174-0051, Japan