Possible Clues:

• I start to catch ten up in many tens
• Old age concealed by feminine type
• A score
• Like a new nonegenarian
• How many I catch in New York, initially
• Minutes for a football match (not counting stoppages or extra time)
• A number in film shown in US city
• Cardinal number
• Not yet a hundred with the inn
• Six of my ten invitations get returned - a high number