Dimensions: 8 3/4 inches long, 5 inches wide, 3 1/2 inches height

Features: rounded / groove on sides at the mid point (see photo below)

Location Found: Gift

Weight: 10 lbs

Details: This is a version of Metropolitan Block. It is wider and heavier. The Brickfrog blog (linked HERE) has a good post to detail some of the history of the company which made both types of blocks.