What is the story of the distinctive 3-story building on Western and Berteau one block north of Irving Park?

I ASSUME YOU ARE REFERING TO THE BUILDING ON THE NORTH EAST CORNER. I WAS RAISED IN THIS AREA (4100 BLOCK OF OAKLEY AVENUE) DURING THE 1950'S AND 60'S. THE UPPER STORIES WERE, AT THAT TIME APARTMENTS, NOT SURE HOW MANY. THE FIRST FLOOR HOUSED AN "ANTIQUE/JUNQUE STORE, THAT NEVER SEEMED TO BE OPEN. AS A GROUP OF "CITY RATS", THE LOCAL KIDS USED TO LOOK IN THE ALWAYS DIRTY WINDOWS AND AT TIMES WE WOULD SEE A VERY OLD GUY, WHO WOULD ALWAYS CHASE US AWAY. WE WERE SURE AT THE TIME HE WOULD EAT US IF WE WERE STUPID ENOUGH TO HARASS HIM TOO MUCH. SOMETIME AROUND 1960 OR SO, MY MOTHER WENT THERE TO TRY TO SELL SOME OLD FAMILY HEIRLOOMS, SHE ACCTUALLY WENT INSIDE!!!! SHE DIDN'T SELL THEM AND I REMEMBER HER TELLING ME, STAY AWAY FROM THERE, THAT GUY IS NOT QUITE RIGHT!!! SORRY THAT IS ALL I CAN OFFER. DENNIS Z