Vintage metal grease gun or hand pump

This object appears to be a vintage metal grease gun or hand-operated fluid pump, constructed primarily of heavy-duty iron or steel with a cylindrical barrel, a tapered nozzle section at the lower end, and a T-shaped handle at the top. The item shows heavy oxidation, rust, pitting, and a dark, weathered patina consistent with long-term exposure to the elements, possibly having been recovered from soil or an unconditioned environment. There are no clearly legible maker's marks, stamps, or brand names directly visible in the image due to the heavy encrustation and surface wear. Based on its overall form and mechanical layout, it resembles tools commonly manufactured in the mid-to-late 19th or early 20th century for agricultural, automotive, or industrial lubrication purposes. The construction exhibits utilitarian craftsmanship typical of heavy machinery accessories from that era. Because no specific brand or manufacturer can be visually confirmed from the current state of the piece, the identification remains unverified and is based strictly on morphological comparison to historical mechanical tools.

Based on what I can see in the image, this object appears to be a vintage metal grease gun or hand-operated fluid pump, constructed of heavy iron or steel with a T-shaped handle and tapered nozzle. I cannot verify the exact manufacturer, date of production, or metallurgical composition from a photo alone, and physical inspection would be needed to determine if internal components are functional or entirely seized. The heavy oxidation, rust, and pitted patina suggest long-term environmental exposure. The estimated value range of $45 to $85 reflects typical market behavior for unbranded utilitarian antique tools of this age and condition, assuming the presumed mid-to-late 19th or early 20th-century period of manufacture is correct. General demand for primitive industrial and agricultural items is primarily driven by decorative appeal for rustic interiors rather than high collector competition. If this piece were determined to be a modern decorative reproduction rather than an aging antique, the market value would likely decrease to the $15 to $30 range. To better understand the item, an in-person examination by a specialist in antique hardware or tool history would be beneficial to search for faint maker stamps beneath the rust and to evaluate structural integrity.