[Brad Winder]

The "F" designates the cabinet style the model 610 chassis was housed in, this case it's a smaller skirted console cabinet. But the chassis should be the same. The only thing to be aware of is that there were two chassis versions available back in the day: 25-40 cycle and 50-60 cycle. The difference is in the power transformers and subsequent filter capacitors that were used. Your set would have an "A" after the model number, if it's a 25 cycle unit.