66kUsually the machine model numbers this book covers are 66K and 99K types. Most older or antique sewing machines dont have a model number printed or stamped on to it, the numberEntrega de trofeos UTC 66K; 18:30 hs. Cierre de meta MCB 41K; 19:00 hs. Entrega de trofeos GTCB 102K y Relevos; 23:00 hs. Cierre de meta del GTCB 102K Relevos y UTCB 66K;