Italian Vetterli 70/87/15 gold/brass fittings?

Looks just like corrosion to me, potentially a bit of salt corrosion can give a bit of a more golden colour.

salt corroded metal - BingImages</a><br /> <br /> <a href="https://www.bing.com/images/search?view=detailV2&ccid=amgk8GNB&id=51E6BC0FD81415D82DE5587441BF77CCE2C4AC62&thid=OIP.amgk8GNB-6XO4PnVLfc8gwAAAA&mediaurl=https%3a%2f%2fth.bing.com%2fth%2fid%2fR.6a6824f06341fba5cee0f9d52df73c83%3frik%3dYqzE4sx3v0F0WA%26riu%3dhttp%253a%252f%252fwww.pcmarinesurveys.com%252fPHOTOS%2bcorrosion%252fss%2brusted%2b1.gif%26ehk%3dc0GynpR7DoRHzfs5fMPg7Ns2mRQPSdWYaWe1kzTUFCk%253d%26risl%3d%26pid%3dImgRaw%26r%3d0&exph=247&expw=306&q=salt+corroded+metal&simid=608045538531631004&FORM=IRPRST&ck=2263078C0577CC3CBC5AEAF9A5038CD8&selectedIndex=11&ajaxhist=0&ajaxserp=0" target="_blank">salt corroded metal - BingImages</a></blockquote> </div> </li>  <li class="postbit blockbody" id="post_3"> <div class="header"> <div class="datetime">02-24-2023, 07:09 PM</div> <span class="username">Aragorn243</span> </div> <div class="content"> <blockquote class="restore">Did it come out of Ethiopia?</blockquote> </div> </li>  <li class="postbit blockbody" id="post_4"> <div class="header"> <div class="datetime">02-25-2023, 12:36 PM</div> <span class="username">Eaglelord17</span> </div> <div class="content"> <blockquote class="restore">Another thought towards my salt corrosion theory, I wonder if the sweat from a individual combined with a very dry climate would do that to the metal.</blockquote> </div> </li>  <li class="postbit blockbody" id="post_5"> <div class="header"> <div class="datetime">02-28-2023, 09:02 AM</div> <span class="username">Anzac15</span> </div> <div class="content"> <blockquote class="restore">No, this one did not come out of Ethiopia.<font color="black"><br /> <br /> <font size="1">---------- Post added at 09:02 AM ---------- Previous post was at 09:00 AM ----------</font><br /> <br /> </font>This is definitely something applied. I took the buttplate off, and it's bare steel on the inside, but what appears to be 'overbrushing', for lack of a better term. I'll try to get some better pics later.<font color="black"><br /> <br /> <font size="1">---------- Post added at 09:02 AM ---------- Previous post was at 09:02 AM ----------</font><br /> <br /> </font>This is definitely something applied. I took the buttplate off, and it's bare steel on the inside, but what appears to be 'overbrushing', for lack of a better term. I'll try to get some better pics later.</blockquote> </div> </li>  </ul> </div> <div class="below_body"> <div id="footer_time" class="footer_time">All times are GMT -4. The time now is <span class="time">05:24 PM</span>.</div> <div id="footer_copyright" class="footer_copyright">  Powered by <a href="http://www.vbulletin.com" id="vbulletinlink">vBulletin™</a> <br />Copyright © 2024 vBulletin Solutions, Inc. 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