Buried treasure of silver coins for sale !!

Hi !

I sell the buried treasure of silver coins of Soviet :

12 coins x 50 kopeks 1924 for $ 12/coin : https://en.numista.com/catalogue/pieces4623.html .

1 rouble 1921 for $ 55 : https://en.numista.com/catalogue/pieces15908.html .

All 13 coins for $ 199 (It is not expensive !).

The coins not cleaned :

Would you like to swap?

These coins are only for sale. Sorry.

The coins in good condition with no rust ! Just on the coins have oxides that can be cleaned without damaging coins.
Many coins of 50 kopeks in the condition XF as well as 1 rouble 1921 in condition XF !!
These coins in condition of cleaning will cost 2 times more expensive !    

Cita: Andrey78These coins are only for sale. Sorry.

I can swap for american silver?

OK. I am interested in Morgan & Peace dollars and American Silver Eagle.  

What do you think is the value of a morgan?

I decided to cleaned a few coins in citric acid. I cleaned 4 coins 50 kopeks and almost cleaned 1 rouble 1921. I need another day to hold the rouble in citric acid that it is completely clean off from oxides. For this reason, the value of the coins will be more expensive !!   

Cita: Andrey78I decided to cleaned a few coins in citric acid. I cleaned 4 coins 50 kopeks and almost cleaned 1 rouble 1921. I need another day to hold the rouble in citric acid that it is completely clean off from oxides. For this reason, the value of the coins will be more expensive !!

Could you show pictures.

Now I have nothing to make pictures of coins. I have to make photos this weekend.