http://www.zerohedge.com/article/guest-post-gold-silver-ratio-–-another-look Whole article is worth perusing (IMHO)
The GSR isnt a very good thing to do a swap with unless your the one with the gold say 1oz gold $1440 swap for 40 x 1oz kookaburra premiums paid on the kooks are way above the premium payed on the gold 40 kooks would sell for around $42 a piece =$1680 ...hmmmm doesnt seem a fair swap to me .A bit different if you swap a 1kg bar & 8x1 oz kook or bar still unbalanced IMO.I would suggest people take the premiums on silver into account before they do a swap & the guys with the gold to do the same