Additional Stamp Impressions	Burelages	Design Prints	Embossings	Frankings	Margin Prints	Matrix Codes	Overprints	Postal Stationery Design Prints
Postal Stationery Form Prints	Postal Stationery Overprints	Print Substrates	Second Overprints	Silk Threads	Stamped Envelope Overprints	Stamp Impressions	Third Overprints	Watermarks

Knowledge / Differences / Matrix Codes

Matrix Code Difference: common term
for two the same postage stamps with no matrix code agreement

Matrix Code Alignment Difference: common term for two the same postage stamps with no matrix code alignment agreement