What are penny black and purple onion stamps?

[Santa's Helper]

Please can someone tell me what these are and where i get them from. Thankyou.

[Kihaku]

i have some links but they are for a non sponsor so if you want to pm me in your normal user id, i'll help you out... they are ranges of stamps - you cou;ld put penny black stamps into google and it should give you links too

[peggiey]

Purple onion are unmounted stamps - the SA monthly kits usually have some in them

[maddy]

Hee heee looks like santa's helper is taking up stamping