These are 2 Antique /Vintage Rubber Bouncing Balls . The first is in brown marbled like composition with central seam and signs of use and is 1” or 2.5 cm across. The second is in green and red swirles and is 1 1/2 “ or 4 cm across again has central seam and a bash with small area missing . Both bounce well please see photos for both age and condition.
eBay