Buy Vintage Lego -

: 1950s-era plates often have a "waffle bottom" pattern. You can also look for "flow marks" or small 4-5 digit design numbers molded inside the piece to verify its era.

Dating a brick involves looking for specific production cues: buy vintage lego

: Genuine bricks feature the "LEGO" logo on every stud. Pre-1963 bricks made of cellulose acetate may have a "C" on them. : 1950s-era plates often have a "waffle bottom" pattern