this is not my guitar but from a buddy who asked me to sell it for him- my passion are the ES-335/345/ and Super-400 and i don't know enough about the 175 series.... the serial number A-26181 suggests a 57 or 58 model, the switch without the grommet also but since the pickups (untouched solderjoints) have no sticker i'm at a loss.... they should be PAF's , right ? how can i verify this and what is the current blue book value of this guitar ? it has changed tuners and a hole in the otherwise orig. pickguard, orig. tailpiece+ case, no repairs or other alterations. any info on this would be of great help, thanks ! btw the guitar is in germany, bought from an american soldier in maybe 1961/62 ....