DutchsFan said:
The serial number of my D4-NT is CF006703. When I bought the guitar new from the dealer, he said it as an acoustic/electric.
When looking inside the sound hole, I can't see any wiring. To be honest, I haven't used a small mirror to peak at the backside of the strap stub. If it's aftermarket, it's the cleanest and most discreet installation I've ever seen.
First the serial number: That's a number for the second half of 1993. There's an ink-stamped date on one of the beveled edges of the neckblock, which should be visible through the soundhole; it's usually on the treble side. This is not the date of manufacture, but the date the rim was completed in the 'body shop'. Anyway, I would think the date in your guitar should be somewhere around July or August 1993.
Second the transducer:
DutchsFan said:
the front shoulder strap button doubles as the receptacle for the amplifier cable plug.
When you mentioned that, I more or less assumed that they had added a strap button on the shoulder of the guitar, that doubled as the output jack for the transducer. Guild would never do that. Now that I think about it, you probably mean that they added a 'shoulder strap' button, that doubled as an output jack, to the 'bottom' of the guitar.
The D4 was available with a Fishman transducer ( with or without a pre-amp). If that was the case, the model designation on the label should read D4-E-NT ( 'E' for electric). Sometimes, when they had an order for a guitar with a transducer, they would take an already finished acoustic from inventory, a transducer was installed in 'final assembly, and the guitar would be shipped to the dealer without the 'E' being added to the label. It should not have happened but sometimes it did.
If you find the ink-stamped date on the neckblock, let us know what it says!
Sincerely,
Hans Moust
http://www.guitarsgalore.nl