Handle is synonymous with ship and means to pack, sell, deliver (including delivery to a storage facility), transport, or in any way to place grapes in the current of commerce within the production area or between the production area and any point outside thereof: Provided, That such term shall not include the sale of grapes on the vine and except when regulations are effective pursuant to §925.52(a)(5) shall not include the transportation or delivery of grapes to a packinghouse within the production area for preparation for market.