AI Appraisal Estimate

This is a philatelic specimen issued by Monaco in 1973 to commemorate the 150th anniversary (1823-1973) of the birth of the renowned French entomologist Jean-Henri Fabre. The stamp features a horizontal rectangular format with a clean, perforated edge typical of mid-20th-century European issues. The design is executed via a multi-color intaglio or photogravure process, showcasing a sophisticated composition. On the left side, there is a detailed portrait of J.H. Fabre wearing his iconic wide-brimmed hat, rendered in dark blue and black line-work. The right side of the stamp is vibrant, depicting various insects including a large moth (Great Peacock Moth), a praying mantis, a beetle, a cicada, and a caterpillar, reflecting his life's work. The palette consists of various shades of blue, green, brown, and white. Numerical and literal markings include the denomination '0,45', the name 'MONACO', the dates '1823' and '1973', and the subject name 'J.H. FABRE' in the lower-left corner. The artist's name 'GANDON' is visible in the bottom right corner, referring to the master engraver Pierre Gandon. The condition appears to be mint or near-mint, though a slight horizontal line or fold through the center of the image suggests it may have been stored in a stock book. The paper shows consistent aging with no significant foxing or toning visible on the face.

After closely examining the image of this 1973 Monaco postage stamp commemorating the 150th anniversary of J.H. Fabre's birth, I can confirm it matches the known design by the celebrated engraver Pierre Gandon (Yvert & Tellier #942). The intaglio printing quality is sharp, and the color registration appears correct for this issue. Visually, the stamp presents well with vibrant colors and intact perforations. However, condition is the primary driver of value in modern philately. You noted a horizontal line or fold through the center; if this is a crease in the paper rather than just a storage mark or scanner artifact, it significantly reduces the philatelic value, effectively rendering it a 'space filler' rather than a premium specimen. From a market perspective, this is a relatively common modern issue produced in sufficient quantities to meet collector demand without creating scarcity. While topical collectors of 'insects on stamps' or 'famous scientists' often seek this issue, the supply is plentiful. Comparable sales for Mint Never Hinged (MNH) examples typically range between $0.50 and $2.00 on platforms like Delcampe or eBay, often sold in sets rather than individually due to shipping costs exceeding the item's value. Please note that without physical inspection, I cannot verify the gum condition on the reverse (mint never hinged vs. hinged), nor can I definitively confirm the paper quality. To achieve the higher end of the valuation ($3), the stamp must be confirmed as MNH with no hidden thins, creases, or toning.