WORD SPIRAL

Starting from 1, fill in the grid clockwise with four-letter words. The last letter of each word becomes the first letter of the next to reveal a former currency unit. 1. Lazy 2. Way out 3. Row 4. Harvest 5. Rugby forward 6. Jetty 7. Ladder step 8. Manner of walking 9. Converse 10. Leg joint 11. Every 12. Stop 13. In this way 14. Seabird 15. The first man 16. Post