Is saw that one Loyd has still it's engine and transfer case. Assuming it's the original engine you could tell more about the Loyd. If I remenbered correctly the differnet types of Loyd used different types of engine. Is there perhaps also a speedo cable still attached to the engine. Als this can tell something about the type. Last but not least you could have a look at the bogie wheels. These have dates on them. If 5 of the 8 are marked one perticular date then the chances are high this would be the manufacturing date. Do you have more pictures of the Loyd? I used to own a Loyd and studied the different types a lot so perhaps I can have a look at it.
Br,
Roland