I would base the analysis not on mint records or other documentation (given the inconsistencies/contradictions/confusion) but on examination of...
Well, they did say the lens was $50, which is definitely not cheap. You can get an enlarging lens cheaper than that (I'd recommend a Nikon 50mm...
Yep, like I said, probably had it laying around, but not the best choice for this application.
He's using a standard macro technique called "lens stacking". Not sure why he chose to use a Helios lens, maybe he had it laying around. Quality...
Nice image. You cmight try using a white reflector to get light into the darker areas. Since your diffuse lighting is coming in from the 3:00, but...
Here's a 1949-S Lincoln Cent DDO#3 presented with a couple of techniques. Unprocessed image using 5x magnification, 25-stack of images: [IMG]...
These were done with my Canon T2i, with 10x microscope objective. The 51-D/S is a focus stack of 21 images. The focus stacker creates a depth map...
Here's a 1951 D/S OMM#1 [IMG] [IMG]
You may have to refresh your browser or something. They seem to be showing up for me. Can anyone confirm they can see the first images?
Here's a stereo pair: [IMG]
Try it now...Ray
[IMG] [IMG] [IMG] [IMG] [IMG]
Been doing it for 20 years, and no damage noted. I am not recommending washing your hands in it, just a brief wipe to your fingertips. Actually...
Yep, that's the idea. Clean off the oils and leave no water behind, ready to handle coins...
Rubbing alcohol is isopropyl with water. Might as well just use water. The water wets your skin and absorbs into it, and then the evaporation gets...
Another thing...it's a REALLY bad idea to wash your hands and then handle coins. To know why, try washing your hands and then pick up a mirror....
If you need gloves you are not handling coins properly. Over the years I've tried nitrile, latex, and cotton, and none of them work well enough...
Wow, that '97 Half is super duper. Here's a lowly 43-D Cen [IMG][IMG]
There is another one of these 1950 Satin Proofs in the Newman collection, on first page at: http://www.ngccoin.com/gallery/newman.aspx
It wasn't until the late teens that rolling coin became widespread, and it wasn't the banks that drove the innovation of automatic coin wrapping...
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