Filed pursuant to Rule 424(b)(2)

Registration Statement Nos. 333-202913 and 333-180300-03

December 17, 2015

Pricing Supplement Addendum No. 1243 dated December 17, 2015

To the Pricing Supplement No. VLS ETN-3/A25 dated November 18, 2015,

Prospectus Supplement dated May 4, 2015 and

Prospectus dated May 4, 2015

VelocityShares™ 3x Long Crude Oil ETN Linked to the S&P GSCI^® Crude Oil Index ER due February 9, 2032 ("ETNs")

Issuer:	Credit Suisse AG, acting through its Nassau Branch
CUSIP/ISIN:	22542D399/US22542D3998
NYSE Arca Ticker Symbol:	UWTI
Aggregate Offering Price of ETNs:	$20,914,300.00
Public Offering Price per ETN:	$3.8026
Principal Amount of ETNs:	$2,750,000,000
Principal Amount per ETN:	$500
Trade Date:	December 17, 2015
Settlement Date:	December 22, 2015
Agent:	Credit Suisse Securities (USA) LLC ("CSSU"), an affiliate of the Issuer
Proceeds to Issuer:	100.00% of the Aggregate Offering Price
Agent's Discount and Commission:	0.00%. However, CSSU is expected to charge normal commissions for the purchase of the ETNs and may receive all or a portion of the investor fee. In addition, CSSU may charge investors a redemption charge of up to 0.05% of the stated principal amount of any ETN that is redeemed at the investor's option. For a further description of the fees and commissions payable pertaining to the ETNs please see the section entitled "Supplemental Plan of Distribution (Conflicts of Interest)" in the accompanying pricing supplement.

You may lose some or all of your principal if you invest in the ETNs. See "Risk Factors" beginning on page PS-19 of the accompanying pricing supplement for risks relating to an investment in the ETNs.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined that this pricing supplement addendum, or the accompanying pricing supplement, prospectus supplement and prospectus, is truthful or complete. Any representation to the contrary is a criminal offense. The ETNs are not deposit liabilities and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency of the United States, Switzerland or any other jurisdiction.

Credit Suisse