The exact scale 1-23 may  be built as either the Standard, B, C, D, E, G, or H15 models using  components supplied in our laser cut parts kit. The plans provide  details for each span and aspect ratio that Schweizer manufactured on  the same basic airframe. The photo above is Herbert Eberbach with his  meticulously built 1:4  beta scale H model 1-23 finished in the colors  and markings of the plane flown by Steve McQueen's character in The  Thomas Crown Affair. The 1-23 is of special interest to Tom Martin. His  father James Martin, worked for Paul Bickle who set two world altitude  records in a sailplane. The aircraft was the Schweizer SGS 1-23E  equipped with oxygen and flown by Bickle in a mountain wave over the  high desert of California on February 21, 1961 to 46,267 ft. with an  altitude gain of 42,303 ft. 
KIT SPECS 
1-23 1:5 EXACT SCALE  
Plan Sheets, Rolled, (sheets 1 of 2 and 2 of 2)
Laser Cut Parts Kit 
FUNCTIONS: Rudder, Elevator, Dive Brakes, Ailerons, Tow Release (optional)
REQUIRED TO COMPLETE MODEL
Wheel 2-1/2” dia. Lightweight Treaded, DUB250TL
Steel Landing Gear Wire, 5/32” x 2” length
Plated Brass Dura-Collars, 5/32”, DUB140
Aluminum Wing Rod, .375” OD x 14” length TMRC70753814
Brass Joiner Sleeve, 13/32” OD x 12” length K&S136
Steel Incidence Pin Wire 1/8” x 6” length
Hinges, Nylon, pkg of 15, DUB117
Bolts, 3-48 x 3/4” with Blind Nut and Washers, DUB126
Pushrods, Sullivan Semi Flexible 36” with Hardware SUL505
Rudder 2-56 Pull-Pull Cable and Hardware Set, DUB517
Tail Wheel, 1/2” dia. Sullivan 350
Wing, fuse, tail 1/16" balsa sheet,
Spruce spars caps,
Balsa shear webs
Balsa wing leading/trailing edges.
  
Cable pushrods (dive brakes) 2,
Adhesive epoxy and CA cements,
Covering, fabric or film,
Servos, wires, battery and receiver. 
Condition is new in box. Asking $250.