Except for the 5300ce, all the 190s and matching 5300s screens were the same size. From Apple's 190/5300 guide:

PowerBook 5300 Series Configurations 

The PowerBook 5300 Series computers come in the 

following configurations: 

PowerBook 5300 

•Processor: 100 MHz PowerPC 603e 

•RAM/Hard drive: 8 MB/500 MB 

•Display: 9.5-inch greyscale 

•Battery: 2.5–4-hour NiMH 

•Weight: 5.9 pounds 

PowerBook 5300cs 

•Processor: 100 MHz PowerPC 603e 

•RAM/Hard drive: 8 MB/500 MB or 16 MB/750 MB 

•Display: 10.4-inch dual-scan color 

•Battery: 2.5–4-hour NiMH 

•Weight: 6.2 pounds

PowerBook 5300c 

•Processor: 100/117 MHz PowerPC 603e 

•RAM/Hard drive: 8 MB/500 MB or 16 MB/750 MB 

•Display: 10.4-inch active-matrix color 

•Battery: 2.5–4-hour NiMH 

•Weight: 6.2 pounds 

PowerBook 5300ce 

•Processor: 100/117 MHz PowerPC 603e 

•RAM/Hard drive: 32 MB/1 GB 

•Display: 10.4-inch SVGA active-matrix color 

•Battery: 2.5–4-hour NiMH 

•Weight: 6.2 pounds

PowerBook 190 Series Configurations 

The PowerBook 190 Series computers come in the following 

configurations: 

PowerBook 190 

•Processor: 66/33 MHz 68LC040 

•RAM/Hard drive: 4 MB/500 MB or 8 MB/500 MB 

•Display: 9.5-inch greyscale 

•Battery: 2.5–4-hour NiMH 

•Weight: 6 pounds 

PowerBook 190cs 

•Processor: 66/33 MHz 68LC040 

•RAM/Hard drive: 4 MB/500 MB or 8 MB/500 MB 

•Display: 10.4-inch dual-scan color 

•Battery: 2.5–4-hour NiMH 

•Weight: 6.3 pounds