Police hunt for $300,000 of stolen stamps

Two men are believed to have broken into 23 Sydney post offices over a near two year period stealing $300,000 worth of postage stamps.

Police have released CCTV footage of the robberies hoping to generate some fresh leads.

They say over a 22-month period between March 2013 and last year, 23 post offices including those at Alexandria, Artarmon, St Peters, Crows Nest and Kingsgrove were robbed.

Cash, mobile phones, SIM cards and USB memory sticks were also stolen.

They believe the same two men were behind all the robberies, but it's the theft of the stamps that make this case so unique.

"The men depicted in the footage appear to be the same two men and, while they have their faces concealed, we are hoping someone may recognise one or both by their eyes, stature, walk or the way they move," said Acting Sergeant Kath Griffin.