I have never owned a Midland 13-877., but this radio was sold from early 1969 until the mid 1970's and was built by "Uni Electronics Corp" who changed their name to 'Uniden Corporation" in 1974.. The Midland 13-877 shares a similar chassis used in the Pearce Simpson Bearcat 23, Regency Formula 23 and a few radios marketed by Zodiac through the mid 70's.