Ok...I was going to leave this alone but as the proud owner (over 40 years), of one I have a confession to make.
I now own 6.
My original A-2, which left with me from The House of Guitars in the late 70's after playing that and an F-20. $$ not sound was the deciding factor but the A-2 was a very, very close second. If it did not sound so darned good I would have waited on the F-20. It was, and is, that good.
So, over the past few years I've picked up an A-20, (sort of a D-35/D-40 flavor), which, frankly, is absolutely stunning....one of my favorite finger picking guitars. It was at GC for cheap, picked it up played for a few and ran to the counter.
An A-30M, (maple cannon built like a D-30...gorgeous guitar)...came next, If it were not for the headstock plate and pick guard you'd swear it was a D-30. Really a lovely sounding guitar.
I have an A-12....it's so so it doesn't hold much to my Ibanez V...which is a real sleeper too.
Then there was an A30R, (D-50) which is really kind of a dud compared to all. Great looking wood but kinda flat. Trying different strings when I grab some on sale.
Last one came in a few months ago locally. This one is just scary...It has a neck and action like some of my old, (sold), Gibby electrics , Sound is amazing, A gorgeous maple guitar with a three piece back like a Martin D-35.
Here is one on reverb, (not the one I bought):
https://reverb.com/item/4413249-madeira-by-guild-p500-professional-series-1973-natural-spruce.
To be honest, MY A-2, A20, A-30M and P-500 can hold their own as far as looks and construction...and sound...to a lot of other guitars I've owned or played. My friends feel the same way. Sure, I've played some losers of all Madeira models but the ones I've bought (save for the A-12 and A-30R) are pretty darned good.
TxBumper had some good info for me regarding where they were assembled but I lost it. He had high praise indeed for some of the Japanese guitars from that era.