Source:  My purchased crest from Family-Crests.com

Note:

this is a reduced image.  If you want to get a full-sized copy, you can order it like I did.  It was only $14.  I ordered it since I was curious how accurate the Halbert's design was.

Back to my version...

The heraldic description of these arms are as follows:

Record: 43061

Origin:  Mraz z Milesovky of Milesovky in the Hora region of Bohemia, ennobled in 1558, and in 1620 lost their lands to the Empire following the Czech defeat at the Battle of the White Mountain.

Arms: Per pale, the dexter per fesse embattled argent and sable, the base masoned argent, and issuant from the battlements, a demi lion rampant azure, langued and armed gules; the sinister azure, a mountain issuant from base or.

Crest: A demi lion issuant azure, armed and langued gules.

Image - Purchased from Family-Crests.com