What is the value of a 1928 E US 1 dollar silver certificate?

"E" is the most valuable series letter for 1928-dated $1 silver certificates. As of 04/2015 approximate prices are:

Circulated: $200 to $500 depending on the bill's condition

Uncirculated: $1500

FAQs:

Blue Ink

In 1928 the Treasury adopted standard colors to distinguish the four types of bills that were then in circulation. A blue seal and serial numbers identify a bill as a silver certificate, a banknote that could be exchanged for an equivalent amount of silver. Silver certificates were discontinued for $5 and $10 bills with the 1953 series and $1 bills with the 1957 series. Redemption for silver metal was halted in 1968.

DISCLAIMER: The values quoted are market averages as of the date shown, but may be different for an individual bill due to variations in quality and other factors. Also the wholesale (buying) price of a bill will be less than the selling (retail) price. A reputable currency dealer will be able to give a more accurate valuation based on an in-person inspection.