I currently have a bottle of white Surface Primer, which I'm using in an airbrush. Works great. I wanted to get a bottle of the grey, but there's a little bit of labelling confusion. I can find 60ml bottles labelled "Surface Primer" online. But the only 200ml ones just have "Grey primer" on them. For example:
http://www.thewarstore.com/product67986.html
http://www.thewarstore.com/product67976.html
The 200ml bottles seem to have the 74 prefix and the 60ml bottles have the 73 prefix. But in both cases, the white is ".600" and the grey is ".601"
So what's the deal here - are these all the same just with labels changing over time? On the Vallejo website, the only thing they show has "Surface Primer" written on it.
edit : upon further inspection, there is one other difference. The surface primer says "Acrylic Polyurethane", but the "Grey primer" says, "Acrylic Urethane". Different?