A non-aqueous silver precursor composition consisting essentially of: at least 1 weight % of one or more (a) polymers selected from one or more of cellulose acetate, cellulose acetate phthalate, cellulose acetate butyrate, cellulose acetate propionate, cellulose acetate trimellitate, hydroxypropylmethyl cellulose phthalate, methyl cellulose, ethyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, hydroxypropylmethyl cellulose, and carboxymethyl cellulose, based on the total weight of the non-aqueous silver precursor composition; (b) reducible silver ions; and (c) an organic solvent medium consisting of: (i) one or more hydroxylic organic solvents, each of which has an α-hydrogen atom and a boiling point at atmospheric pressure of at least 100°C and less than 500°C, and (ii) a nitrile-containing aprotic solvent or a carbonate-containing aprotic solvent or both a nitrile-containing aprotic solvent and a carbonate-containing aprotic solvent, all of which are different from all of the (i) one or more hydroxylic organic solvents, each having a boiling point at atmospheric pressure of at least 100°C and less than 500°C; wherein the (b) reducible silver ions are present in the non-aqueous silver precursor composition in an amount of at least 0.1 weight % and up to and including 400 weight %, based on the total weight of the one or more (a) polymers. at least 1 weight % of one or more (a) polymers selected from one or more of cellulose acetate, cellulose acetate phthalate, cellulose acetate butyrate, cellulose acetate propionate, cellulose acetate trimellitate, hydroxypropylmethyl cellulose phthalate, methyl cellulose, ethyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, hydroxypropylmethyl cellulose, and carboxymethyl cellulose, based on the total weight of the non-aqueous silver precursor composition; (b) reducible silver ions; and (c) an organic solvent medium consisting of: (i) one or more hydroxylic organic solvents, each of which has an α-hydrogen atom and a boiling point at atmospheric pressure of at least 100°C and less than 500°C, and (ii) a nitrile-containing aprotic solvent or a carbonate-containing aprotic solvent or both a nitrile-containing aprotic solvent and a carbonate-containing aprotic solvent, all of which are different from all of the (i) one or more hydroxylic organic solvents, each having a boiling point at atmospheric pressure of at least 100°C and less than 500°C; (i) one or more hydroxylic organic solvents, each of which has an α-hydrogen atom and a boiling point at atmospheric pressure of at least 100°C and less than 500°C, and (ii) a nitrile-containing aprotic solvent or a carbonate-containing aprotic solvent or both a nitrile-containing aprotic solvent and a carbonate-containing aprotic solvent, all of which are different from all of the (i) one or more hydroxylic organic solvents, each having a boiling point at atmospheric pressure of at least 100°C and less than 500°C; wherein the (b) reducible silver ions are present in the non-aqueous silver precursor composition in an amount of at least 0.1 weight % and up to and including 400 weight %, based on the total weight of the one or more (a) polymers. <EOS>