Mahjongg Tile Set with 4 racks (Travel set?)

Unique (vintage?) mahongg tile set. They are slightly larger than 'standard' tiles but much thinner - really easy to handle. See photos for measurements. Would be great as a travel set as they are thin and not super heavy. Includes all bams, cracks, dots, dragons, 16 winds, 8 flowers (mixed - some are numbered some aren't), 8 jokers. Total of 152 tiles. 4 colored racks - slightly smaller than 'standard' racks, and no pushers attached. Good used condition.