Contact Us
Providing evaluation, inventorying, documentation, preservation, and consultation for coin and currency collectors. Based in NW Iowa.
Contact Us
Providing confidential consultations for collectors, heirs, and estates: Evaluation, inventorying, documentation, preservation, and consultation. Sam Kooiker, Founder
Location
Sheldon, Iowa
Hours
By appointment only, typically evenings & weekends and the occasional lunch hour if you are nearby.
Inventorying, Documenting, Evaluating and Preserving your coin and currency collection with care and confidentiality.
© 2025. All rights reserved. Sioux Collective, LLC. Collections are not kept at home.
OBJECTIVITY, INDEPENDENCE, TRUST.
Sioux Collective, LLC
Sheldon, Iowa
sam@siouxcollective.com
Sam Kooiker, Founder