Hey ,
At first when I saw the Green colored retracts , I knew I had those too . However ,after pulling out a set of NOS I have been saving for a CPA plane , the Supra Retracts ,designed by Hanno Pretter , also green , are made a little different . Possibly yours are related ,made before or after ,because of the green anodized main frame ,and black wire strut .That description , is what I would put out there for a search or Wanted item .
Steve