William,
The number 14 or 16 is just the die number, or casting number so Truth Window Hardware can keep take of issues they may have. The number 45054 is a number we find on the Long Crank Handle. If you are looking to replace the operator, the number 45054 will not tell us what you have. Your best bet is to send me a picture of your operator to sales@robertbrooke.com, or look for numbers stamped on the operator arms.
Greg
1-800-642-2403