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found a mushroom shaped cement type marker can anyone identify what this is?

RCO

Well-Known Member
May 17, 2012
4,456
113
Ontario , Canada
I'm not sure what it is , might be from something that used to be in that location before . if there had been chairs , tables , something related to that sort of thing

either way doubt it has any historical or retail value
 

hemihampton

Well-Known Member
Oct 6, 2006
6,889
113
I've found a few of these before over the years & also wondered what they were? LEON.
 

Robby Raccoon

Trash Digger
Jun 14, 2014
4,317
63
Locō movērī
I once saw something similar embedded in a very old concrete road as a cross-walk marker. Normally when I find these, they're brass markers denoting who/what/when.
 

willong

Well-Known Member
Apr 22, 2009
352
43
Port Angeles, WA
I once saw something similar embedded in a very old concrete road as a cross-walk marker. Normally when I find these, they're brass markers denoting who/what/when.
The brass ones you mention, if about two and a half inches in diameter, are typically benchmarks. USGS and other government agencies set them, quite often in stone or in concrete posts, in the course of various types of surveys. The pictured concrete item might be a type of survey hub too, but it's not one that I am familiar with.
 

willong

Well-Known Member
Apr 22, 2009
352
43
Port Angeles, WA
Can any one identify this? I found it in my back yard.
Are you certain it is made of concrete? Could it be corroded zinc or pot metal?

Please measure (not metric) diameter of the small end. The diameter of that shank directly under the flared cap portion would be helpful too if you have a set of calipers. I think I know what it might be if it is made of metal and not concrete. If it what I suspect, corrosion from burial gave it that pockmarked appearance.
 

Marie-26

New Member
Feb 25, 2020
4
1
Pawcatuck, CT.
Are you certain it is made of concrete? Could it be corroded zinc or pot metal?

Please measure (not metric) diameter of the small end. The diameter of that shank directly under the flared cap portion would be helpful too if you have a set of calipers. I think I know what it might be if it is made of metal and not concrete. If it what I suspect, corrosion from burial gave it that pockmarked appearance.
6" diameter under mushroom cap
 

willong

Well-Known Member
Apr 22, 2009
352
43
Port Angeles, WA
Thanks Marie,

If it's ceramic material then it is not was I was thinking it might be.

If cast of pot metal, I thought it might be a type of fence post finial (end cap), though not a form I've seen before, for galvanized fence and gate posts such as are used in chain link fences. In a smaller size, such an zinc or pot metal item could also conceivably be inserted in pipe to mark a survey point.
 

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