"Somebody has got to know something."
Homeowner Kate Rothery said the guns were a mix of old family heirlooms and newer guns that her husband used for duck shooting.
"It's in the wrong hands and they are probably going to make them sawn-off shot guns, when they were beautiful, beautiful pieces of history."
The burglars had got into the house by wrenching open a window left ajar for an elderly cat, she said.
Disregarding laptops and the television, they stole just a Playstation before getting into the garage and making off with the whole gun cabinet, Mrs Rothery said.
"It's just such a shame and it's an invasion."
"It was a weirdly dumb break-in."
Her neighbours had noticed a white vehicle backing up to the garage, but had not realised anything was amiss, she said.
She believed there were probably two burglars.
The scary thing was that they must have known when the family was out of the house, she said.
Anyone with information should contact Masterton police on 06 370 0378 or call Crimestoppers anonymously on 0800 555 111.