I don't know who started selling these "15½" master reels" but they made a killing selling what I assume are needledrops. http://www.valueyourmusic.com/reel-to-reel?utf8=✓&q=led+zeppelin+15

This one actually looks like it could be real: https://www.popsike.com/LED-ZEPPELIN-1969-promo-MEXICAN-7-unique-FREE-SHIPP-jimmy-page-yardbirds/352919807336.html

There are a bunch of other Mexican 'promos' out there: https://www.popsike.com/php/quicksearch.php?searchtext=zeppelin+mexican+promo&layout=&sortord=adate&endfrom=&endthru=#

This 'promo from Uruguay' is supposedly from 1972, but the cover picture is from the 1977 tour. Also it seems a single seller managed to find about 15 of them and started listing them on ebay in 2015... https://www.discogs.com/sell/item/1066351903?utm_campaign=sell_email_new&utm_medium=pm&format=Vinyl&text=Led-Zeppelin-Friends-Celebration-Days&ev=wh_new&utm_source=relationship

This one seller seems to have found a trove of Russian records pressed clandestinely on old x-ray film. I remember seeing articles about these, but only jazz records from the 40's and 50's. If these were legit, you would think more than one single seller would have found them. https://www.popsike.com/php/quicksearch.php?searchtext=russian+x-ray&sortord=adate&pagenum=1&incldescr=&layout=&sprice=&eprice=&endfrom=&endthru=&bidsfrom=&bidsthru=

I just saw this auction on Ebay: https://www.ebay.com/itm/LED-ZEPPELIN-Led-Zeppelin-IV-1972-MEXICO-ADVANCE-PROMO-7-EP-Psych-33rpm/174202714256?hash=item288f4a7890%3Ag%3AK0QAAOSw7BleVjPX&LH_Auction=1 If it were real, it would be a very cool item to have, but there are too many red flags. I have noticed a lot of these fantasy items for sale lately, so I am going to post a few in this thread, in hopes of preventing you guys from getting ripped off.

Ebay is a great platform for long-time reputable sellers who have built a strong following. If you are a first-time seller, you likely will get ignored because unfortunately there are a LOT of charlatans out there, and a test pressing is easy to fake. I suggest you find someone knowledgeable about these things to check it out first. Tell us where you are and I'm sure someone here can suggest some names.

If you're saying your record has labels for side 1 on both sides, it's no big deal. You might get a slight premium if you resell it.

I think that red disc was exclusive to Japan and not widely distributed elsewhere.

Does anyone here know Mark Linchner? If he is a member of this board, I'd love to hear the story behind the alternate Coda.

I was recently told the copies that had brown print on the outer bag are 1st pressings, and the ones with blue came out later. I don't know if that's true.

This was the 1st US edition it has a silver disc with a red logo and rim, made in Japan.

It may have something to do with the recent UK (European?) copyright laws that declare any sound recording becomes public domain if there isn't a physical release of it within 50 years after it is made.

Better yet, tell us what's etched in the trailout.