Cobalt chloride is NOT a desiccant. It is a humidity indicator that allows visual inspection of the state of a true desiccant. Dehumidifiers...
The cobalt in humidity indicators is the natural isotope, which is stable. Cal
Anyone can buy indicating Drierite from Amazon, Staples, etc.. There are no skulls on the bottle or large print warnings. The SDS has the...
Calcium sulfate is very safe. Chances are you're surrounded by it because it's the main ingredient in drywall. The calcium sulfate in drywall is...
Yeah, those were the days. I too did a little active public chemistry as a youth. But these days, it would get you arrested as a terrorist. Cal
Only some microbes can synthesize vitamin B12, and cobalt must be in their growth medium for them to do it. Plants can neither make nor need...
Cobalt chloride is added to silica gel and other desciants in tiny amounts. It transitions from anhydrous (no water and blue) to dihydrate (two...
Find a dealer who specializes to some extent in the coins in which you are interested. Look in the dealer list to see if they will have a booth...
Brett, I’ve learned the hard way not to bid “live” with some exceptions (see below). It’s too easy to get caught-up and overbid, or to hesitate...
Yeah, I bought an ASE for comparison after acquiring a few original walkers. It's a great design, and I can see how people get hooked on...
I agree this thing should have never made it into a holder. I guess there is a policy that if it can the authenticated and is chemically stable...
Saw a Judd-1599 1879 Morgan half dollar, PR67CAM PCGS, on Collectors Corner. The identical coin is being offered by New York Gold Mart for $47K...
It may not deserve the grade it's got. However, with a little dip (oops, conservation) by PCGS, which would maintain the grade on the slab, it...
I agree in general, but once you've done your homework, failure to pounce on a good deal can cause regrets later. Has happened to me more than...
I agree that PCGS auction prices is probably the best pricing guide for medium to high-end coins. I have also found that omissions do occur in...
Apparently I can use a credit card, which is a good thought. I'll have to see if if it affects the price. Cal
True, but I would like to receive a coin if I send a check. Cal
Anyone have recent dealings with Argent Asset Group or Bob Paul Coins? They are advertising a number of coins on the Collector's Corner website....
Does it stick to a magnet? If not, it ain't steel. Cal
Follow-up: coin went for $23,500. That's about 23500/1300 = 18 times the value of an ordinary 1 oz. gold eagle. Subtract the usual buyer's fee,...
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