As above.
I'll also drop this link here.
Manufacturer info: Shimano - Overview of the groups 1990-1999 Group Model No. Model Year 105SC BB-1055 90 91 92 105 BB-5500 99 Ultegra BB-6500 98 99 Dura_Ace...
www.retrobike.co.uk
And search the model from the 'find on page' from your browser.
And this one too.
Shimano MTB '90 Deore XT Deore DX Deore LX Exage 500LX groups M735 M650 M550 M500 shift/brake lever ST-M090 ST-M091 ST-M070 ST-M071 ST-M060 ST-M050 shift lever brake lever BL-M050 brake BR-M732 BR-M733 BR-MT62 BR-MT63 BR-M453 BR-M550 BR-M453 BR-M454 rear...
www.retrobike.co.uk
And then double check it with the catalogue.
These are from the Shimano Archive, these are not the same as the ones in the Retrobike Archive. These pdf are also mostly to large for me to attach directly so going to have to link off site. (I do have much better copies of these scanned or waiting to scan for 95-99ish I've just not got...
www.retrobike.co.uk