Differences between Ries tripods, A series

I just bought an A100-2 Ries tripod and A250-2 head, directly from

Ries by mail order. However, I'm not sure I got the right items. The

head weighs less than 5 pounds, so according to the specs, they must

have sent me the A250. The legs weigh about 15 pounds, so it seems I

got the right legs, based on weight.

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Question: Is there any way to distinguish the A250 from the A250-2,

other than by weight; and similarly the A100 vs. the A100-2? I asked

customer service at Ries, and they didn't know. (Incidentally, the

practical difference between the models is that the A-100 and A250 are

rated to support 25 pounds, while the A100-2 and A250-2 are rated to

support 60 poun