The Rigellian Protectorate Space Arm (RPSA) Destroyer is an original design by Todd Dillen, based on Jack Southerland's Starfire artwork that is found in the Classic Starfire (Third Edition) products.
Starfire miniatures are "squadron scale" (0.5"-5") miniatures designed for the Starfire Quick Start Rules for Miniatures. You can download the rules for free from Wargame Vault from
https://www.wargamevault.com/product/214246/Quick-Start-Rules-for-Miniatures
Starfire products can be found at
https://www.wargamevault.com/browse/pub/9056/Starfire-Design-Studio and
https://www.starfiredesign.com/starfire