To open or not to open

2005:? 2006? 2010? found different dates in diff. pubs.
https://www.speakupwny.com/forums/s...reful-when-using-chemical-dips-to-clean-coins

2013:
https://www.coinworld.com/news/precious-metals/2013/12/silver-dips-unrecommended.all.html

2016: https://www.coinworld.com/news/us-c...s-findings-from-coin-cleaning-survey.all.html

This last one only had 38 sampling replies, say next one in 3 years??2019

It isn't the type of acid that affects the process as much as its concentration, but most of the long term damage and etching seems to come from the thiourea holding onto the silver atom by charge bonds. Wonder if a rinse of some of the commercial static removers before final rinse would help? I have always practiced and recommended dilution of dips by 1/10 and longer rinsing followed by acetone only rinse and air drying. Jim

 

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Any aqueous acid solution is going to be highly conductive. I can't see how static electricity could possibly come into play.

 

I agree the literature all says this, but my experience tells me to doubt the veracity of this.

 

Thanks for all the information!

 

Thank you for the recipe - does this have a shelf life? In other words, if one were to mix up a bottle of it, how long might it remain viable?

 

At full concentration as on my slide, as a stock solution in a nearly full bottle, over a year. And as an added bonus, if you get an article of clothing that gets a persistent brown stain on it, give it a little squirt with this and then launder promptly.

 

Hmm. A drop from 188 responses to 38. I guess I'll have to add on my Kodak stuff to the recipes.

 

I usually keep the stuff in one of those fine gooseneck lab squeezy bottles. It makes it easy to handle for fabric use.

 

+1,000 For me, given a choice of a quick acting dip like E*Z*est or a SLOOOOOW one like Kodak S-10, I'll take the slow one every time. It allows a customized amount of toning removal. Example: I had a barber dime proof that was nearly black. I treated it in diluted S-10 and got a very attractive bluishness at the edges only. I pulled it and stopped it immediately.

 

As regards albums and folders my rule of thumb is that AG / G / VG copper and nickel coins can safely be stored in Whitman folders. Whitman and DANSCO albums are alright for F / VF / XF / AU coins. No albums are good for mint state coins. Even the premium albums like those sold by Littleton that claim to be archival quality will cause your coins to tone. For display purposes and personal enjoyment I keep my type set in a DANSCO 7070 and have spliced in an off brand gold type set page of the same tan color that I found somewhere. Eventually I'll find DANSCO gold type pages. Mint State can be protected by paper or plastic flips; Loctite holders or slabs.

 

Are you sure they're not Dansco? I've seen them occasionally at coin shows at the Supplier booth. Not nearly often enough. I scored some weird past Dansco single pages at shows.

 

positive. This page is off color and sticks to anything it is laid against. I removed it from a home made binder full of coins that I purchased so I don't know where it came from. The pages you describe are new old stock DANSCO. I've tried to order them from my LCS. His supplier refused to take an order since they were not in stock. I'll eventually find them somewhere and swap out that page in my albums.