Issued in 1977 by the Grenadines of St. Vincent, this 5¢ stamp features the Fiddler Crab (Uca pugnax), an intriguing coastal species known for the male’s oversized claw used in courtship displays. The artwork, designed by B.G. Studio and printed by Questa, captures the crab’s natural habitat with vivid underwater tones and coral motifs. The overprint “SPECIMEN” denotes a sample issue distributed to postal authorities for reference. This piece is part of a marine wildlife series highlighting the region’s rich coastal biodiversity.