RTO SUB-1000 TSP - two found, wich one are correct?

Greetings!

I'm looking for cheap 4ohm Subwoofers and found the RTO-1000 on Ebay. (RTO das Original! SUPER-SUBWOOFER fur PKW und Home STEREO 2x 180W 2x4 Ohm 255mm | eBay) But the TSP the seller states there are different from the TSP's that are listed on that website: TSPs vieler Chassis

Does someone know wich ones are correct or has other sources? I Couldn't find other datas for that speaker in the internet, but there should be old cataloges of RTO and Audio-Hifi newspapers that stated the TSP between 1994 and 2002 as the second link states as source. Maybe someone got the same speaker and still got the correct data? I already contacted the ebay seller, he dosn't know why its different and just says they normaly check everyting carefully but couldn't provide anything to proof his data.

Cheers!
 
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