Business Details
50+ Years
experience
Document Preservation & Authentication Services
Since 1946, Cohasco Inc-Document Prsrvtn has been a trusted leader in document preservation, authentication, and appraisal services. Our expertise spans historical documents, manuscripts, autographs, and collectibles, serving both individual collectors and institutions. We combine decades of hands-on experience with specialized knowledge in typography, paper analysis, and ink properties to deliver accurate assessments. Our team adheres to USPAP standards for appraisals, ensuring compliance with the highest professional benchmarks. We offer tailored solutions for preservation needs, from acid-free storage to custom archival products.Our auction services provide access to rare Americana and collectibles, supported by transparent bidding processes. With a legacy of integrity, we prioritize client education and personalized service to address unique preservation challenges. Our reference library and industry collaborations enhance our ability to resolve complex authentication inquiries. We remain committed to advancing the field through continuous learning and adaptation to evolving archival standards.
Services
Archival Supplies
Document Preservation
Authentication Services
Appraisal Services
Auction Services
Details
- Year established: 1946
Highlights and features
- We offer over 75 years of specialized experience in document preservation and authentication.
- Our team combines expertise in typography, paper analysis, and ink properties for accurate assessments.
- We provide USPAP-compliant appraisals for insurance, charitable donations, and legal purposes.
- Our auction services feature rare Americana and historical collectibles with transparent bidding.
- We maintain a comprehensive reference library and collaborate with industry experts for complex cases.
Associations and certifications
- USPAP (Uniform Standards of Professional Appraisal Practice)
Services
Archival Supplies
We provide acid-free storage boxes, folders, and hand-crafted binders to protect documents, photographs, and collectibles. Our products cater to both individual collectors and institutional archives. Each item is designed to meet long-term preservation standards for paper-based materials.
Authentication Services
Our experts analyze historical documents, manuscripts, and autographs to determine authenticity using typographic, paper, and ink analysis. We identify forgeries, alterations, and provenance issues for clients worldwide. Services include detailed examination reports and photographic analysis.
Appraisal Services
We offer USPAP-compliant appraisals for insurance, charitable donations, and estate planning purposes. Our reports include market value analysis and detailed documentation for high-value collections. Services cover rare books, manuscripts, and historical ephemera.
Auction Services
Our auctions feature Americana, Civil War artifacts, and rare documents from major collections. We provide bid sheets, closing dates, and transparent bidding processes for mail and phone participants. Catalogs include detailed item descriptions and value ranges.
Preservation Consultation
We advise on optimal storage solutions and restoration techniques for unique collections. Our team provides customized recommendations for both single-item protection and large archive management. Services include material selection and environmental recommendations.
Questions
How do I determine the value of my historical document?
We provide appraisal services with market analysis based on comparable sales and condition assessments.
Can you authenticate autographs and manuscripts?
Yes, our experts use typographic analysis, paper testing, and ink examination to verify authenticity.
What payment methods do you accept for services?
We accept Visa, MasterCard, Discover, checks, and money orders for all services.
How can I submit items for appraisal?
Contact us via phone or email to discuss submission options, including mail or digital images.
Do you offer preservation product discounts?
Yes, we provide volume discounts for archival supply orders based on quantity.
What auction bidding options are available?
We accept bids by phone, mail, or fax with clear closing date instructions provided in catalogs.