Class NUMBER@1 and Class NUMBER@2 were TOPS classifications assigned to a single electric multiple unit -LRB- MISC@1 -RRB- at different stages of its use as a prototype for the MISC@2 series .

They were given to a single electric multiple unit -LRB- MISC@1 -RRB- at different stages of its use as a prototype for the MISC@2 series .
