Fix a vintage computer (IBM PS/2 55SX) without a DS1287 Real Time Clock
A direct replacement appears to be available ex stock from Digikey in the form of a DS12877 - see below.


Digikey have the DS12885 and Ds12887 ICs in stock. See here
These are stated by Dallas to be direct replacements for the old IC
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It's a bit hard to believe but the datasheet claims that the 12887 24 pin DIP is functionally identical to your module and has the battery included and sells ex stock for $10 - rush out and buy one now :-).
Price and availability here
If this is in fact a cruel illusion and this is the IC and not a complete module then they have the 12887 and 12885 and you could build a new module with relative ease - see 1st article below and others.
Datasheet DS12885 / DS12887

Here is an excellent page on modifiying a DS1287
Yee Ha !!!

Note that he says:

Basically the DS1287 is a DS1285 chip, where the pins for the xtal-connection and the battery are bended upwards. Then the battery and xtal are placed atop of the chip, connected to the pins and everything is covered with a pretty rigid protective compound.
The DS1387 is the same chip with an additional integrated 4K SRAM. All described modifictions apply to this chip as well.


If your bottom pins are damaged it may still be possible to hack into the unit.
Another modification page here
If you think your module is damaged beyond repair THIS PS2 55SX incredible repair record may convince you that it is not. I'm amazed that he didn't destroy it in the process. he gives advice on how YOU can do it more subtly.

http://www.instructables.com/image/FO4JO46FKLD2FOO/Into-the-belly-of-the-beast.jpg

Yet another version
VBG !!!!!!!!  :-)  So many ! So many!!!!