I know we discussed already a lot about the fake sun buckles, but the reproductions getting better.
Last week I bought one on ebay that seemed to be the real thing.
http://www.benl.ebay.be/itm/370904923872?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
On arrival I took a closer look and concluded that it was a reproduction, however it was a nice one. The buckle is nicely polished and looks the same as the original one. However its weight is less tha the original and all parts have thinner feelin. I contacted the seller and will have a refund once it arrives back in Italy. So I've sent it back through registred mail. Seller gave me the explination that it was removed by his Swiss watchmaker so he didn't know it was a fake (for what it's worth).
Found another one on the bay (also in Italy)
http://www.benl.ebay.be/itm/vintage-handmade-leather-strap-20-mm-with-rare-original-heuer-S-S-buckle-16-mm-/251358902693?pt=UK_Jewelery_Watches_Watches_MensWatches_GL&hash=item3a862879a5

Best regards,

Gianni