benchmark coins

[+Scotsbob]

Hello. I found this marker next to a micro cache I found. I tried to look it up online and I could not find any info. I was wondering if it is of any significance. It says;

U.S. Geological Survey Benchmark

10

TKM

Elevation

Above Sea

227 feet

1941

 

It is in the town of St. Helena in Napa County California at Silverado Trail and Fawn Park Rd.

Thanks Ken

 

I've just bought 4 hawaiian coins showing these markers, I realize that they are not trackable as geocoins but they are all individually numbered and I would like to know a little more about them , who issued them , why etc.

Thanks in advance

Edited December 22, 2006 by Scotsbob

[ArtMan]

Hawaiian coins? Are these souvenir items or legal tender? Either way, could you post a photo?

 

-ArtMan-

[+Scotsbob]

Hawaiian coins? Are these souvenir items or legal tender? Either way, could you post a photo?

 

-ArtMan-

They look exactly like the picture above, on the obverse side it shows the benchmark area and co-ords

here are the ebay pics

http://cgi.ebay.com/Haleakala-Summit-Marke...5QQcmdZViewItem

Edited December 22, 2006 by Scotsbob

[68-eldo]

Hawaiian coins? Are these souvenir items or legal tender? Either way, could you post a photo?

 

-ArtMan-

 

I can guarantee these would not be legal tender. Hawaii has used American money since the overthrow of the monarchy in 1893.

[+Shorelander]

Isn't that an Azimuth mark on the coin?

Edited December 22, 2006 by Shorelander

[+Scotsbob]

Maybe I shouldn't have called them coins as they seem to be replicas of the benchmarks more than anything.

[+Holtie22]

scotsbob-

 

Check out TU2875 for some insight into what these coins portray.

[+Ernmark]

I'll bet Scotsbob is referring to the benchmark replicas available here: http://www.benchmarkcoins.com/ - they offer 4 replicas of BM's from Hawaii (1-USGS, 2 USC&GS [an RM & AZ], & 1 - Hawaii Territory Survey) as well as others such at the Washington Monument (...didn't ArtMan recover that one when the scaffolding was up around that one? ).

 

Scotsbob - A good primer on the purpose of these marks is available on the Benchmarking section of the geocaching.com site, if you haven't poked around there already. If I understand correctly, in the U.K. "trigpoints" are used for similar survey purposes. There are other good places to read up on US benchmarks - I'll let others provide the links (the wife has just informed me that we leaving to go shopping....lucky me !

 

 

edit:

Well actually trigpionts may be more like out 'triangulation' or 'traverse' stations

Edited December 23, 2006 by Ernmark

[+GEO*Trailblazer 1]

There are several who have done the benchmark coins.

 

We do some of the trackable Benchmark geocoins.

We even have a Benchmark coin club.

BENCHMARK COIN CLUB

[+rogbarn]

They are made by Benchmark Coins International. They have also made various other benchmark coins, mostly in the western US. The Hawaii ones are not trackable but most (all?) of the others are. I have several (not the Hawaii ones though) and they are good products.

[+Scotsbob]

Thanks Rogbarn, that's exactly the info I was looking for, and the makers are the people I bought them from.

The coins are excellent BTW

 

Thanks (and thanks to all the other forum members who took time to reply).