[Boatanchors] Vintage 1969 Solid State German Board

[Byron Tatum]

Hello-
    I need schematic and connection data on this 1969 QRP board by Schilling, DJ3CI, now a SK-
    Has a KVG XF9-B crystal filter and had these markings on board :
     Schilling HS 1000 ZF
     DJ3CI, HS 1000 ZF, 2019-01
        This board is small, has 3 IF transformers, one trimpot, uses transistors BF167, BF173, BC108A, BC168, has two carrier osc. crystals and air trimmers.This board and others were used to make early homebrew SSB exciters, receivers or transceivers. W1DTY published a 1969 HR article for a SSB transceiver using a similiar board. 
        I would like to find schematic on this board if possible, thanks, Byron 
WA5THJ.