4 inch square 'riven'/'bumpy' porcelain tiles for a repair (Catton NR6)

Hi Everyone. I need to repair an area of wall which has 4" square riven or bumpy porcelain tiles in an off-white, although they will be painted - so their colour isn't that important. If you have any gathering dust, I'd be happy to take them from you. I estimate that I'd need about 15 or 20. Depth-wise, the area that I'm repairing has older-style, relatively thin tiles - so thicker tiles may not be suitable. Sorry to be so specific and thanks, in advance, for your help.