Brass Faucet Cartridge Stem

The item appears to be a used brass faucet cartridge stem, held in a person's hand. It is characterized by its elongated, cylindrical shape, tapering slightly towards one end. The primary material is brass, evident from its tarnished, dull brown to greenish-brown patina, indicative of oxidation over time. The stem has a smooth shaft for the majority of its length, with evidence of some minor surface abrasions and marks consistent with removal or previous installation. At one end, there is a distinct, circular opening with an internal 'C'-shaped or crescent-shaped void, suggesting a mechanism for water flow control or a key. The opposite end, partially visible, shows threaded sections and what appears to be a rubber or synthetic O-ring or washer, crucial for sealing. This end also displays a lighter, perhaps less tarnished, brass tone, possibly from being encased or protected. The overall length is proportionate to what a person can comfortably hold in their fingers, likely around 3-5 inches. The craftsmanship suggests a manufactured plumbing component, designed for a specific function within a faucet assembly. Its worn appearance indicates it is either a removed part needing replacement or a component from an older, disassembled fixture. The presence of threading and a sealing mechanism points to its role in regulating water flow.

I have visually examined the provided image of what appears to be a used brass faucet cartridge stem. Based on its appearance, I assess its authenticity as a genuine plumbing component used in a faucet assembly; its construction, material (brass), and design features (threading, sealing area, keyway) are consistent with modern or slightly older faucet cartridge stems. Its condition is used, with noticeable tarnishing and minor surface abrasions indicative of prior installation and removal. The greenish-brown patina suggests oxidation typical for brass in a plumbing environment. From a market perspective, these items are readily available new from various manufacturers at plumbing supply stores or online retailers. Comparables for a used individual cartridge stem would be minimal, as they are typically replaced with new units when faulty. There is no significant demand for used, individual cartridge stems, nor are they considered rare. Their value is primarily functional. The main factors impacting its value are its used condition and its nature as a common, replaceable plumbing part. There is no indication of it being a rare or antique component that would command a premium. I cannot determine its precise functionality from the image alone, nor its specific make or model, which would be crucial for exact new replacement cost. Limitations in authenticity verification from images alone include my inability to physically inspect the seals for integrity, test the internal mechanism for smooth operation, or assess the alloy composition of the brass. An in-person examination would allow me to check for internal wear, verify the presence and condition of all sealing components, and potentially identify manufacturer markings. Provenance documentation would not typically apply to such a common, mass-produced item. Scientific testing would be excessive for an item of this type but could confirm material composition if there were any doubts about it being brass.