Around 1887 Johnson introduces his standard MR buildersplates, MAKERS, REBUILT and BOILER NEW. The REBUILT plates for the Johnson era have MR style lettering and are brass or on occasions Bronze, both materials have been seen in MR plates. They are rimmed oval approx 3/16th to a 1/4 inch thick depending on casting quality. These plates were the norm right up until the Fowler era in 1921. Again these plates were quite often stamped with the loco number in the rear at the bottom especially on rebuild plates. These plates could have the last digit in the year cast on, soldered on or even riveted on. See below for examples the 1904 shown has a date cast on, a No 5 is shown sweated on and a No 3 riveted on. There is also a great variation seen in casting quality and finishing, I get the impression that little care was taken on these plates other than if on a passenger loco.
Basic dimensions in inches- 10 & 3/8 by 5 & 15/16ths (hole centres 8 & 3/4 typical)
10 & 1/4 by 5 & 7/8ths (hole centres 8 & 3/4 typical)
Pattern Rarity- Not common but is commonest MR pattern known, 9 seen, 15 known of by self.
Special Features- Often stamped with loco number on rear, see examples below, may have last digit in year cast, riveted or soldered onto plate!