Chapman and Cutler LLP
111 West Monroe Street
Chicago, Illinois 60603
August 21, 2015
Mr. Edward Bartz
Division of Investment Management
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Re: Guggenheim Defined Portfolios, Series 1355
Total Income Portfolio, Series 6
File Nos. 333-205341 and 811-03763
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Dear Mr. Bartz:
This letter is in response to your comment given during a telephone
conversation with our office regarding the registration statement on Form S-6
for Guggenheim Defined Portfolios, Series 1355, filed on June 29, 2015 with the
Securities and Exchange Commission (the "Commission"). The registration
statement proposes to offer the Total Income Portfolio, Series 6 (the "Trust").
PROSPECTUS
Investment Summary -- Principal Risks
1. The duration example in the eighth bullet uses a duration of three
years. Please confirm that the average weighted duration of the underlying
securities is approximately three years or less. If not, please revise this
example to reflect the average weighted duration of the underlying securities.
Response: We confirm that the average weighted duration of the underlying
securities is approximately three years or less and, therefore, the example does
not need to be revised.
We appreciate your prompt attention to this registration statement. If you
have any questions or comments or would like to discuss our responses to your
questions please feel free to contact the undersigned at (312) 845-3484.
Very truly yours,
CHAPMAN AND CUTLER LLP
By /s/ Morrison C. Warren
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Morrison C. Warren