Another source suggests it was simply because the Romanian army wasn't able to standardise colouring in the various factories until a few years later

The engraved metal buttons features the 3 Swedish crowns and give variety to the blue of the coat

previously used with light prior wear

Chest Size: 45" | Suggested Size: Medium Regular - Label suggests a chest from 92 - 100cm and a height ranging from 164 - 170cm

Swedish Army M40 "Grötrock" Brown Work Jacket - Large Water Bottle Another source suggests it wasAt a glance 100% Cotton Material 2 Button Hip Pockets Button Closure Adjustable Cuffs Shoulder Epaulettes Solid Grey Brown Colour Chest Size: 48" Suggested Size: Large Slim Label reads "104" Sleeve Length: 24. 5" Regular Collar to Hem: 32" Vintage Militaria Issued 1940's 1950's WW2 Issue Genuine Swedish Army Svenska Armn Surplus Grades Unissued w Flaw Great condition having no holes or tears from long term storage, but the metal buttons have