Block of four 20-cent United States postage stamps with 'International Peace Garden' design

This item consists of a block of four (2x2) postage stamps, appearing to be unused with intact decorative perforations on all sides. The design on each stamp features a red rose in bloom alongside a green maple leaf, symbolizing the botanical and diplomatic ties between the United States and Canada. Each stamp includes the text 'International Peace Garden' across the top and 'USA 20c' at the bottom right. On the left side, the dates '1932' and '1982' are printed, which is consistent with a commemorative issue for the 50th anniversary of the Peace Garden. The colors include vibrant reds, several shades of green, and black text on a cream-white background. The stamps appear to be in good condition, showing no visible cancellations, though physical inspection would be required to verify the presence of original gum or the absence of thinning. While the printed markings are stylistically consistent with United States Postal Service issues from the early 1980s, these are unverified without expert physical philatelic examination to rule out reproductions.

Based on the provided image, I am evaluating a block of four 20-cent United States postage stamps bearing the 'International Peace Garden' design (1932-1982). From the photo alone, I see intact decorative perforations and vibrant red and green colors consistent with early 1980s issues. However, I cannot evaluate the adhesive backing or check for hidden flaws like paper thinning without a physical inspection. My valuation is based on the working assumption that these are standard US Postal Service commemorative issues of this era. Given the massive print volumes for 1980s commemorative stamps, market demand is exceedingly low, and values rarely exceed face value by more than a marginal amount for intact blocks. While the visual characteristics bear markings consistent with US stamps from this period, this attribution remains a hypothesis. In-person philatelic examination would be required to rule out color copies or modern replicas, though the economic incentive to reproduce such low-value items is virtually nonexistent. If these are standard issues of this type in unused condition, they carry a nominal value of $1 to $3. If they were to be identified as reproductions or unauthorized copies, they would hold no commercial value.