The yellow's now gone, man it's nice to see it without paint. You really get a nice idea of the workmanship and detail of the build from a naked frame.
Interestingly I found the serial which was hidden under a heap of powder-coat.
Serial is 056P3SM
So, that says to me it's a 93, it's Small/Medium, but crucially does the P indicate it might be a Prototype? I know 93 is early for a Shock A Billy but what do you think? 94 Catalogue seems to hint at there being a few 1993 prototypes doing the rounds.