Apple could hit another record in sales for the December quarter this year, surpassing the previous sales record in Q3 2013, when the company shipped 51 million iPhone units.

Investment firm AlphaWise estimates 67 million iPhone sales, 5 million above the Wall Street estimation. It comes alongside Morgan Stanley analyst Jasmine Lu, estimating 65 to 70 million sales this quarter.

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The big 'if' this quarter will be Apple's supply and demand, and if manufacturers can keep up with orders. Apple has acquired 7 million more units for the holiday season to ship even more iPhones.

The iPhone 6 and iPhone 6 Plus had amazing first quarters, selling over 40 million units. Apple is looking for even more in the holiday season, and it looks likely it will hit a new record.

China's surge for more iPhones has been a huge boon for Apple, selling over 30 million units in the region alone. It is Apple's biggest market in 2014, surpassing the U.S. and Japan, where the iPhone has always been popular.

Brazil has also shown more demand for the iPhone this year, another huge market. Even traditional poor selling markets like Italy, Spain and UK showed more demand for iPhones. France and Japan did not show much iPhone growth in 2014.

The expected record breaking numbers could give Apple a nice stock boost heading into 2015, although how big the boost depends on the amount of sales. If Apple manage to topple big estimates like 70 million, it might bring the stock price to $150, according to some analysts.

The Q4 2014 iPhone sales should also tie into a nice Apple Watch launch in Q1 2015. The iPhone 6S will reportedly launch soon after or alongside the Apple Watch, according to several internal sources.

TagsiPhone, December, Holiday season, Morgan Stanley