Dear Blake,

Thank you for contacting Mearto with your appraisal inquiry.

The presented object appears to be a Champagne sabre designed for GH Mumm Champagne house by the British designer Ross LOVEGROVE (1958). The sabre was made out of steel and is housed in an polyurethane lacquered casket.
Works by this artist were recently offered and sold on the international auction market.
This piece is in good condition and there is no serious damage visible in the images provided.
A fair market estimation would be between 200 to 400 USD.
This estimate is based on actual recent past recorded auction sales of comparable items. Retail "asking prices" can be higher and may vary.

With kind regards,
Georg