G.R. No. L-19650 September 29, 1966CALTEX (PHILIPPINES, INC. vs. ENRIC! PAL!"ARIn the year 1960 the Caltex (Philippines) Inc. (hereinafter referred to as Caltex) conceived and laid thegroundwor for a pro!otional sche!e calculated to dru!up patronage for its oil products."eno!inated#Caltex$oodedPu!pContest#% it callsfor participantsthereintoesti!atetheactualnu!&erofliters ahoodedgas pu!p at eachCaltexstationwill dispenseduringaspecified period.'!ployees of the Caltex (Philippines) Inc.% its dealers and its advertising agency% and their i!!ediatefa!iliesexcepted% participationisto&eopenindiscri!inatelytoall #!otor vehicleownersand(orlicenseddrivers#. )ortheprivilegetoparticipate% nofeeorconsiderationisre*uiredto&epaid% nopurchase of Caltex products re*uired to &e !ade. 'ntry for!s are to &e !ade availa&le upon re*uest ateach Caltex station where a sealed can will &e provided for the deposit of acco!plished entry stu&s.+ three,staged winner selection syste! is envisioned. +t the station level% called #"ealer Contest#% thecontestant whoseesti!ateisclosest totheactual nu!&erof litersdispensed&ythehoodedpu!pthereat is to &e awarded the first pri-e. the next closest% the second. and the next% the third. Pri-es atthis level consist of a /,&urner erosene stove for first. a ther!os &ottle and a 0ay,1,2ac hunter lanternfor second. and an 'verready 3agnet,lite flashlight with &atteries and a screwdriver set for third. 4hefirst,pri-e winner in each station will then &e *ualified to 5oin in the #0egional Contest# in seven differentregions. 4he winning stu&s of the *ualified contestants in each region will &e deposited in a sealed canfro! which the first,pri-e% second,pri-e and third,pri-e winners of that region will &e drawn. 4he regionalfirst,pri-e winners will &e entitled to !ae a three,day all,expenses,paid round trip to 3anila%acco!panied &y their respective Caltexdealers% in order to tae partin the #6ationalContest#. 4heregional second,pri-e and third,pri-e winners will receive cash pri-es of P700 and P/00% respectively.+t the national level% the stu&s of the seven regional first,pri-e winners will &e placed inside a sealedcan fro! which the drawing for the final first,pri-e% second,pri-e and third,pri-e winners will &e !ade.Cash pri-es in store for winners at this final stage are8 P/%000 for first. P9%000 for second. Pl%700 forthird. and P670 as consolation pri-e for each of the re!aining four participants.)oreseeing the extensive use of the !ails not only as a!ongst the !edia for pu&lici-ing the contest &utalso for the trans!ission of co!!unications relative thereto% representations were !ade &y Caltex withthepostal authoritiesfor thecontest to&eclearedinadvancefor !ailing% havinginviewsections197:(a)% 19;9 and 19;/ of the 0evised +d!inistrative Code% the pertinent provisions of which read asfollows8