Yes, with 90 different two-digit numbers to choose from, HP have re-used some of them several times over, confusing collectors forevermore.
And 10 is especially overused. In order of introduction, there are:
HP-10 (sometimes called the 10A)
HP-10C
HP-10B (yellow labels)
HP-10B (green labels)
HP-10BII (Gold)
HP-10BII (Silver)
HP-10BII+
Not surprisingly, they are generally worth progressively more today as you move up the list (newer to older) though 10B w/yellow might be the cheapest due to the huge number of them sold.
Thanks. I prefer to spend this amount of money on a 16L.
And so I did, a brand new 16L arrived to day in good order with a minimal wait period.
DM41X beta: SN00018.
DM41X: SN00496.
DM42 beta: SN00074.
DM42:SN06020.
DM10L: SN056/100.
DM11L: SN 02058.
DM15L: SN2074.
DM16L: SN2156.
DM15, DM16, DM41
and a whole bunch of the original HP's,