GREECE - Factors to Watch on July 1

ATHENS, July 1 (Reuters) - Here are news stories, press reports and events which may affect Greek financial markets on Wednesday:

GREECE'S OTE TO BUY ROMANIAN MOBILE COMPANY ZAPP

The Balkans' biggest telecoms company OTE (OTEr.AT) said on Tuesday it agreed to buy Romanian mobile operator Zapp for 207 million euros to gain a 3G service in the region's largest cell phone market. [ID:nLU885898]

NBG SHARES TO TRADE EX-RIGHTS ISSUE ON JULY 2

Shares of National Bank (NBGr.AT), Greece's largest lender, will trade without the right to a 1.25 billion euro rights issue from July 2, the Athens stock exchange said on Tuesday. [ID:nLU235622]

OPAP AGREES NEW SALES DEAL WITH GREECE AGENTS

Europe's biggest betting firm, OPAP (OPAr.AT), said on Tuesday it had renegotiated a binding sales agreement with sales agents in Greece, a move that will help shield it from any possible deregulation of the Greek gaming market. [ID:nLU48916]

GREEK MAY HOUSEHOLD CREDIT GROWTH SLOWS TO 7.3 PCT

Growth in Greek household borrowing slowed to an annual 7.3 percent pace in May from 8.4 percent in April, the country's central bank said on Tuesday. [ID:nLU734778]

GREEK APRIL RETAIL SALES PLUNGE 15% Y/Y

Greece's retail sales by volume fell 15 percent year-on-year in April after an 18.3 percent drop in March, data by the country's statistics service (NSS) showed on Tuesday. [ID:nLU281547]