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Well what was it?Two brushes at right angles to each other and what appears to be a strange 'toroidal' field winding. Would a four pole repulsion motor have that brush arrangement (looking at them, they could well be shorted through the carrier) - I've only seen them with 180 degree separation (two pole?) before?
I know one of the complaints about this NG is that it would often be more appropriately identified as 'uk.rec.ebay' (I'll have to look to see if there is such a thing now!), but this item pricked my curiosity.