Looks to be in the 5-20w range. Word to the wise Sam's are full of typos, and even the good ones are not the last word... There were often many production changes throughout the life of a chassis... Sam's are usually a snapshot of one. Whether it was the first, last, best, or worst is not usually known.
When you restore a set it is best to go by the original parts instead of the schematic... granted if someone has worked on it before you and hacked up the wiring or made questionable replacements, or if the originals are damaged beyond identification the schematic is your best guide.
That resistor is probably for current limiting the selenium rect. Resistance is not critical ( wattage will be though) and may be increased to compensate for the reduced voltage drop across the diode that you're presumaby replacing the selenium with.
The preceding was a message from your friendly neighborhood insomniac TV restorer.
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