Finally got myself an X61. It may be the S version but I'm still really happy with it. All that's letft is to get the Middleton's BIOS and a newer and cooler
Lenovo ThinkPad X61 (7674) - características, especificaciones y opiniones
IBM LENOVO X61 take apart video, disassemble, how to open disassembly - YouTube
TABLET PC ULTRA PORTABLE IBM LENOVO X61 VISTA BUSINESS 100Go DISQUE DUR - 2048M | eBay
OFFTEK 256MB Memoria RAM de Repuesto para IBM-Lenovo ThinkPad X61 (7768-xxx) (DDR2-5300) Memoria para portátil : Amazon.es: Informática
Lenovo ThinkPad X61 - Notebookcheck.org
Lenovo x61 de segunda mano | Milanuncios
Another addition: Lenovo ThinkPad X61s : r/thinkpad
Lenovo ThinkPad X61 - Notebookcheck.org
ThinkPad X61: The Subnotebook That Got a Second Chance - YouTube
Lenovo ThinkPad X61 12" Core 2 Duo 2 GHz - HDD 80 GB - 1GB - Teclado Francés | Back Market
Lenovo Thinkpad X61s - Notebookcheck.org
Batería de 8 celdas para ordenador portátil, 14,4 V, para Lenovo ThinkPad X60 Tablet X61 Tablet PC 42T4507 42T5204 42T5208 42T5209 40Y8314 40Y8318 - AliExpress
Minimalist retro "battlestation" i use for emulation (to quench my envy of all the cool rigs in this community). ThinkPad X61 Core2Duo : r/retrobattlestations
Using a ThinkPad X61s in 2020 – Ioannis Karagiorgos blog