Can an air conditioner rated for 50Hz be used on a grid at 60Hz?
Don't ship an air conditioning unit overseas, for Pete's sake.

Your cash stake in that unit is "what it will cost to buy a comparable one on Craigslist at your destination" minus "what you can sell this one for here".  That number may even be zero or less than zero.  

The only way the shipping costs won't absolutely blow away your cash stake by a factor of ten, is if you ship your goods by seagoing container.  

Even more, the Philippines have a weird dialect of 240V power where neutral basically does not exist.  Taking an older A/C unit, you may find the unit has suffered some insulation failure between neutral and ground; harmless enough in Qatar/Europe but in the Philippines' strange power it spins your electric meter or shocks people who touch it.   

To say nothing of the 50/60Hz incompatibility, which is a deal killer all by itself.