10.13.1 (17B1002) created on MacBook Air vs 10.13.1 (17B1003) created on MacBook Touch ID

I don't think they're machine specific. From Apple: "Build number 17B1003 contains the security content of 17B1002 and additional bug fixes."

Apple released a second fix last night (17B1003) to address the file-sharing bug that was introduced with the first fix (17B1002) hours earlier. Disregard your 17B1002, as 17B1003 is the latest stable macOS build.

Ahhh perfect!!!

# pkgutil --pkgs | grep com.apple
com.apple.pkg.update.os.10.13.1Supplemental.17B1003
com.apple.pkg.update.os.10.13.1Supplemental.17B1002

Interesting, Apple is finally providing a way to programmatically determine whether a specific Security Update was applied:

https://support.apple.com/en-us/HT208315

1. To confirm that your Mac has Security Update 2017-001: 2. Open the Terminal app, which is in the Utilities folder of your Applications folder. Type what /usr/libexec/opendirectoryd and press Return. 3. If Security Update 2017-001 was installed successfully, you will see one of these project version numbers: opendirectoryd-483.1.5 on macOS High Sierra 10.13 opendirectoryd-483.20.7 on macOS High Sierra 10.13.1

So...

#!/bin/sh

result=$( what /usr/libexec/opendirectoryd | awk '{ print $2 }' | cut -f2 -d "-" | tr -d "
" )

echo "<result>${result}</result>"

Gives you...

# /tmp/test.sh
<result>483.20.7</result>