No Gold When You Go — Peter Chambers

In five centuries, Seldon's Gold had travelled far. Kings and cut-throats, freemen and freebooters, all had chased it. Toots McKern definitely had an ancient coin in his pocket when they fished him from the bay. A wealthy collector hired Mark Preston to locate the treasure. Preston rated his chances low, particularly when he found how many people wanted to stop him. He had to move and think even faster than usual to keep out of his two least favourite places - jail and the morgue.