The type and the details regarding the state coat of arms were not described clearly and were not standardized by a special Act. Because of this, for several decades they took different forms: lesser form; lesser form without supporters, compartment and motto, but covered with mantle from 1879 to 1880; greater form with supporters, bearing two national flags, compartment, motto and mantle from 1881 to 1927; middle form with supporters, compartment and motto from 1915 until 1918/20. Besides these there were different variations within these types. This perplexed situation was resolved by a special parliamentary commission, which sat after 1923. In 1927 it legitimated the middle form of the coat of arms, similar to these used as personal coats of arms by Bulgarian monarchs Ferdinand I and his son Tsar Boris III (1918–1943), but excluding all dynastic elements and preserving only the pure state symbolism.