The Southwest Africa Medal (Südwestafrika-Denkmünze, sometimes abbreviated SWA) was awarded to Imperial German forces service in German Southwest Africa in 1904 to 1908.  Most clasps (official and unofficial) are somewhat difficult to find on the market with or without the SWA.  The official clasps closely resemble the various styles used on the 1870-1871 Franco-Prussian War Medal (you may want to look at my guide http://reviews.ebay.com/1870-1871-Franco-Prussian-War-Medal-clasps_W0QQugidZ10000000002349162 for a more detailed look at the styles).   It's important to note that this has not been documented as a single medal entitlement.  

The bronze clasps have notes which are of interest to the collector.  It should be noted that the prices can vary substantially from dealer to dealer - especially if accompanied with other medals &/or documentation.  Verified medals with 3 official clasps are rare while a 4 clasp medal commands premium prices.  Unofficial clasps are listed in the Southwest Africa Medal Unofficial Clasps guide http://reviews.ebay.com/Southwest-Africa-medal-Unofficial-Clasps_W0QQugidZ10000000003215944. 

AUOB  For further information, please see: http://reviews.ebay.com/AUOB-clasp_W0QQugidZ10000000003830379 

FAHLGRAS  For additional information on this rare clasp, please see:  http://reviews.ebay.com/FAHLGRAS-clasp_W0QQugidZ10000000003831841

GROSS-NABAS  For further information, please see:  http://reviews.ebay.com/GROSS-NABAS-clasp_W0QQugidZ10000000003832163 

GROSS-NAMALAND  There is a spelling variant for this clasp.  For additional information on this clasp, please see:  http://reviews.ebay.com/GROSS-NAMALAND-clasp_W0QQugidZ10000000003836061 

HEREROLAND  For further information about this clasp, please see:  http://reviews.ebay.com/HEREROLAND-clasp_W0QQugidZ10000000003836257

KALAHARI 1907  Awarded only to English forces for operations at Kalahari in 1907.  Extraordinarily rare and commands a premium price at a major specialist auction.  A good quality forgery of this clasp is known to exist. 

• (1978, £250 - forgery)

KALAHARI 1908   Awarded for operations at Kalahari in 1908.  Rarely found on the dealer market but most often at major specialist auctions.  Copies and forgeries are common. 

• (1999, €128)
• (2005, €200)
• SWA with KALAHARI 1908 (2006, $175 - suspected copy)
• SWA with KALAHARI 1908 (2006, €250)
• SWA with KALAHARI 1908 (2006, $150 - copy)
• (2006, €225)
• SWA with KALAHARI 1908 (2006, $125 - copy)
• SWA with KALAHARI 1908 (2006)

KARAS-BERGE  Note that there are spelling alternatives to this clasp.  For further information, please see:  http://reviews.ebay.com/KARASBERGE-clasp_W0QQugidZ10000000003830312 

NARUDA  Spelling since 11 Novemeber 1908.  Probably the 2nd most rare clasp in this series, most recipients were issued the clasp NURUDAS fairly quick and this clasp was issued in 1909 (mainly to late claimants).  Often found with the KARAS-BERGE clasp. Possibly found at a major specialist auction.  Copies are common.

• (1999, €200)

NURUDAS  Spelling prior to 11 November 1908.  Often found with the KARAS-BERGE clasp. 

• (1999, €154)

NOSSOB  For additional information on this clasp, please see:   http://reviews.ebay.com/NOSSOB-clasp_W0QQugidZ10000000003842682

OGANJIRA   For more information about this clasp, please see:  http://reviews.ebay.com/OGANJIRA-clasp_W0QQugidZ10000000003847552

OMAHEKE  For additional information on this clasp. please see:  For additional information on this clasp, please see: http://reviews.ebay.com/OMAHEKE-clasp_W0QQugidZ10000000003838401 

OMARURU  Sometimes found at major specialist auctions.

• (1993, €195)

ORANJE  For additional information on this clasp. please see:  http://reviews.ebay.com/ORANJE-clasp_W0QQugidZ10000000003844031 

TOASIS  Uncommon on the dealer market but sometimes found at major specialist auctions.

• (1999, €192)

WATERBERG  Awarded for the action near Waterberg.  Common on the dealer market.  WATERBERG, OMAHEKE, HEREROLAND, GROSS-NAMALAND is one of the few 4 clasp combinations possible.

• (1984, £23)
• (1999, €77)
• (2005, €50 - copy)
• (2006, €125)

Copies and forgeries abound.  Most copies (typically cast) are made for collectors or re-enactors who require an example.  Please review my copy medal guide http://reviews.ebay.com/Worldwide-Military-Medals-Copy-Medal_W0QQugidZ10000000001875117 and forgery medal guide http://reviews.ebay.com/Worldwide-Military-Medals-Forgery-Medals_W0QQugidZ10000000001875079 for a more detailed explanation.  Jeweler's copies are known and are often accepted if they are verified contemporary - but many sellers do not make the distinction clear.  Again, the best advice is:  Buy only from a reputable dealer who specializes in Imperial German medals.  Please visit my blog (http://blogs.ebay.com/tsa-li) and/or guides for further information.  Thank you for your visit!