Stamp Collecting

[Segilla]

Having returned to my NZ collection abandoned c 1950 I'm very rusty on some topics and welcome help.

I used to use benzine ad lib but the easiest obtainable substitute is said to be Ronsonal. Lighter fluid used to be discouraged as it was slightly greasy. All I can get locally is Swan brand fluid. is this OK?
Will it get self-adhesives off paper?

Any comments on the 'morality' of buying an envelope and appropriate stamp, self-addressing it but before dispatch sticking on it some of the numerous stamps which have arrived on envelopes over the years without being franked.
May need co-operation of the PO to ensure the old ones are properly franked.

I'd like to be in touch with anyone with knowledge of NZ stamps.

[Cloverjo]

For removal of stamps from envelopes, Mrs Overall -here this morning- said warm water and a drop of washing up liquid was a good solution.
Your third paragraph has confused me. Are you trying to reuse stamps, or collect franks?

[dannyk13]

Below link might be of interest to you.

http://www.theanswerbank.co.uk/ChatterBank/Question1392037.html

[mrs_overall]

http://www.theanswerbank.co.uk/ChatterBank/Question1392037.html

[Sir Alec]

This looks to be quite a handy site, Segilla,

https://stamps.nzpost.co.nz/about-stamps-collecting/historical-stamp-issues

[Segilla]

Thanks for the responses.

Cloverjo, I said I would be buying an envelope and appropriate stamp = using that simply as a medium to get others franked. Would never defraud anyone. Couldn't stand the shame of being found out.