1. Depending on condition, it is likely too valuable to ship in an informal fashion. Do it right, and have the shipper include at least $1000 in insurance payable to you or Dad. Take a look at typical ranges of Luger prices on some of the online sites such as Gunsamerica.
2. Haven't kept up on...
when you sell part of the lot,consider either selling the "bacK" third reserving yourself a driveway easement to the middle third, OR selling the middle third with a driveway easement along the edge of the back third. Your choice whether you want your house in the middle, closer to the shop, or...