I just bought another two router for my home lab from my good friend Mark at ccie-racks.com. These are 2610XM 128/32.
Cisco 2610XM (MPC860P) processor (revision 1.0) with 127627K/3445K bytes of memory.
Processor board ID JAE07190Q2R
M860 processor: part number 5, mask 2
1 FastEthernet interface
32K bytes of NVRAM.
32768K bytes of processor board System flash (Read/Write)
Currently i am using IOS adventerprisek9-mz.124-10a.