If the model is Rola C12P, PX or PEG they should be 20 watts or thereabouts. They are not bad speakers, but far more rounded- sounding than V30s. The alnicos are nice. You may or may not like them. They would want to be in perfect condition and I'd be wanting to try before buying to ensure there are no cone-cry issues or similar.
Rola merged with Plessey and eventually Celestion. I had some Rola speakers from '74 but never seen any later.
My other Telecaster is a Thinline
The Tele Bible, Ch 1, v 10 Love thy Telecaster, covet not thy neighbour's Strat!