Decals are available, in my webstore, for the 1/200 scale model of the Mustang 1A available through Armaments in Miniature.

Webstore: http://shop.miscmini.com/t/decals-1/200--9mm

There are two decal sheets available for Mustang 1As of No. 170 squadron. Each sheet has enough decals for four models. There's also a separate sheet available that contains decals for the yellow leading edge stripes. Each of these stripes is 14mm by 1.25mm. Two stripes are need for each wing and they need to be fitted and trimmed by the modeler. I experimented with a single, larger decal. During testing I found that the larger decal cracked when wrapped around the leading edge of the model. That's why there are two stripes per wing.

Below are pictures of a sheet of No. 170 squadron markings and the leading edge strip sheet.

M9-0322-1A Mustang 1A 170 Squadron.jpgM9-0322-WLES Mustang 1A leading edge stripes.jpg