I agree with swamperbob here, it is just foolish to use baking soda or any other over the counter chemicals on your coins.
Cleaning is generally not something one should do.
There are conservation services by NCS and PCGS for that.
Furthermore I would give the coin for conservation only after I confirm itīs authenticity.
Beware of sellers who are registered in one country (you can check this on the seller details page where the feedback records are shown), but show the itemīs location in a different country.
This type of sellers have often something to hide in general or just use friendīs addresses to register a new account after their own has been blocked.
And finally, a good feedback does not mean 20, 50, 100 or 200 feedbacs from a dozen of buyers (or sellers) and of items which are worth below $10.
There are many fraudalent sellers who accumulate 200 feedback fast from 0.99 cent items, all sold or bought from their friends and suddenly offer a couple of rare Bavarian 2 thaler coins in near mint state for $200-$300 (often also with a return priviledge), which later turns out to be a fake.
Please show us a photograph of the coin anyway, just to make sure, what we are talking about here.
Edited by coinworldtv
01/17/2017 08:24 am