London Welsh have signed Argentina prop Pablo Henn from French side Limoges for their return to the Premiership.
The 31-year-old loose-head prop won the most recent of his nine international caps against England in June 2013.
Henn has Top 14 and European experience with Stade Francais, Montauban and Brive, having moved to Europe in 2006.
"Pablo really impressed against England last summer, he's made over 100 appearances in the Top 14 in France," said Welsh head coach Justin Burnell.
Henn, who began his career in his native Argentina with Hindu Club, made his international debut against Chile in 2004 and helped the Pumas to a 23-20 victory over France in Cordoba in 2012.
"He's just an out-an-out natural scrummager," added Burnell. "We've had brilliant feedback on him.
"The set-piece is hugely important in the Premiership and the signing of Pablo is another massive statement by the club."