What is the value of plate Goodwin Bros warranted?

The value of the plate warranted by Goodwin Bros would depend on various factors such as its historical significance, condition, rarity, and market demand. Without specific details regarding the plate in question, including any distinguishing features or provenance, it's difficult to assign a precise value. Typically, collectible plates can range widely in value, from a few dollars to several thousand, depending on these factors. For an accurate assessment, consulting a qualified appraiser or auction house specializing in collectibles would be advisable.