Dated 1733 Cob Real Or Cast?

Looks like a cast copy of a sea salvaged 8 reales Klippe indeed.
What you have on the cut is not possible on a genuine coin, and those were ultra-sharp, even really damaged sea-salvaged coins of this type are sharper.

Here's a real one. Sedwick's photo shows the sharp edges.

http://auction.sedwickcoins.com/Mex...3F_i13084471

An aside: you call it a "Klippe" I thought klippe were completely different eg:

http://www.mcsearch.info/search.htm...&c=&a=&l=#16


To expand a Klippe is produced by means of a roller mill strips of metal were rolled through an apparatus much like an old fashioned washing machine mangle. This producing a series of coin on the strip. to produce the actual coin it was cut out of the strip. it became fashionable for the contemporary collectors to collect the un-rounded cut outs. As seen in the link.

astrowiki : look for Klippe 1733 on MCSearch, you'll see that coin ;)
It's the name of hand-cut coins indeed. From what I understood, they were cut to the proper weight, and then printed between two mechanical dies. To me klippe = klipped, which means hand cut.
It's indeed the transition between the cobs (hand hammered between two dies), and modern coins which were cut to the proper shape and weight, and then pressed (the edge being applied before or after - depending on the period)
What you describe could is what was done for previous copper coins from Spain, they were rolled like that and then cut (not all, some were hammered). Segovia was also minting silver coins that way (I can post pics of those if you want).

John
I have several real ones (I sure hope they are real), when do you want to do the XRF? I could ship them to you right before USMexNA in October and you could bring them back to me at the event. Since the main discussion topic this year is fakes, that would work out nice.

Actually I was just at the New York International and met Max & Cory from Mexican Coin Company. This years MNA Conference is indeed on fakes - I think they tried to get Bob Gurney (swamperbob) to go but not sure on his answer - he was just at Florida FUN - its also a long flight for me from NJ to Arizona but I am considering it. I will take you guys up on your offers but not right now ... maybe one at a time in a few months - got some other stuff going on now and someone else has to do the XRF analysis for me at my new company so its only a few samples per month. Personally - I am assuming there will be no surprises on these issues with Ag,Pt & Au levels.
One thing is for sure on another topic Krause is all "messed up" with the War of Independence listings. Max does a great talk on certain KM issues in the recent MNA #2 Conference Talk which is available on CD - see the MNA journal or call MCC. I also talked to Mike Dunnigan at the NYITL - he kind of straighten me out on the 1811 Chihuahua cast pieces from my recent 9/2013 paper in the MNA journal - my idea that the plain edge 1811's may have CIRCULATED first and then with regal edges is UNLIKELY as an anti-counterfeiting measure for these issues. There are about 5-6 known 1810 Chihuahua - these are actually known as a group of authentic mint stamp pre-1811 issues (i.e., such as 1806,1808,1810,1809, etc.) with the Chihuahua T & Pillar of Hercules casts as with the 1811-183 issues and ALL OF THESE have circle and sqaure edges. He had one of the 5-6 known at NYITL for $10,000. The edge was present but CRUDE. The point being there was a notion a year earlier in 1810 at Chihuahua to supply regal type edges to these cast Chihuahua's. So ... the plain edge seen in my study for the 1811 Chihuahua cast he thinks are just minting flukes or pieces that just ACCIDENTALLY got passed the edge applying process during their production at Chihuahua in 1811. Seems likely ...

It simply could be debased alloy ... the WOI issues are still in their infancy.

JPL