- Goffstown, New Hampshire
- 14 Years Experience
- Solo Practice
- CAGA · Verify
About
Jon Siefken is based in Goffstown, New Hampshire and holds CAGA designation through the Certified Appraisers Guild. With over 14 years of experience, he specializes in appraising rare collectibles and placing items at auction to achieve optimal pricing for clients.
Services & Specializations
Jon Siefken provides appraisal services for rare collectibles and assists with auction placement. His practice focuses on determining fair market value and connecting items with appropriate auction venues to maximize client returns.
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Full Bio
Jon Siefken is a CAGA-designated appraiser based in Goffstown, New Hampshire. With over 14 years of experience in the field, he specializes in appraising rare collectibles and placing items at auction. His practice focuses on helping clients achieve the highest possible prices for their items through expert valuation and strategic auction placement. Siefken accepts multiple forms of payment including Visa, Mastercard, cash, and checks. His firm was established in 2012.
Credentials & Verification
Credentials held by Jon Siefken, each independently verifiable:
- VerifyCAGAIssued by Certified Appraisers Guild of America

