I picked up a G&B 10 gallon visible pump at a auction yesterday but am stumped as it doesn’t seem to line up with other Gilbert and Barker 10 gallon pumps. The model # on the ID tag is TC1-1 1386. I’ve been unable to find any reference to this number. Another difference is there are no ribbed bands along the bottom of the skins. The nozzle hook and holder also seem different on this pump. Does anyone recognize this as a G&B or do you think it was re skinned sometime in the past?